Crash an application when setting not exist material parameters on ubershader

[daemyung]

Describe the bug
Crash an application when setting not exist material parameters. Material comes from ubershader.

To Reproduce
Steps to reproduce the behavior:

1. Prepare a GLTF model that has material properties. This material causes a crash.
2. Run gltf_viewer with ubershader

Sorry I can't share this model file. But this crash is happened if hasIOR is true.

(filament::gltfio::MaterialKey) $0 = {
  doubleSided = true
  unlit = false
  hasVertexColors = true
  hasBaseColorTexture = false
  hasNormalTexture = false
  hasOcclusionTexture = false
  hasEmissiveTexture = false
  useSpecularGlossiness = false
  alphaMode = OPAQUE
  enableDiagnostics = false
   = {
     = (hasMetallicRoughnessTexture = false, metallicRoughnessUV = 0 '\0')
     = (hasSpecularGlossinessTexture = false, specularGlossinessUV = 0 '\0')
  }
  baseColorUV = '\0' 0 '\0'
  hasClearCoatTexture = false
  clearCoatUV = '\0' 0 '\0'
  hasClearCoatRoughnessTexture = false
  clearCoatRoughnessUV = '\0' 0 '\0'
  hasClearCoatNormalTexture = false
  clearCoatNormalUV = '\0' 0 '\0'
  hasClearCoat = false
  hasTransmission = false
  hasTextureTransforms = false
  emissiveUV = '\0' 0 '\0'
  aoUV = '\0' 0 '\0'
  normalUV = '\0' 0 '\0'
  hasTransmissionTexture = false
  transmissionUV = '\0' 0 '\0'
  hasSheenColorTexture = false
  sheenColorUV = '\0' 0 '\0'
  hasSheenRoughnessTexture = false
  sheenRoughnessUV = '\0' 0 '\0'
  hasVolumeThicknessTexture = false
  volumeThicknessUV = '\0' 0 '\0'
  hasSheen = false
  hasIOR = true
  hasVolume = false
  padding = '\0' 0 '\0'
}

Expected behavior
Load a GLTF model and run well.

Logs

utils::PreconditionPanic
in const SamplerInterfaceBlock::SamplerInfo *filament::SamplerInterfaceBlock::getSamplerInfo(std::string_view) const:97
in file filament/libs/filabridge/src/SamplerInterfaceBlock.cpp
reason: sampler named "clearCoatMap" not found
#0	0x1011147ac utils::CallStack::update(unsigned long) + 32
#1	0x1011308d0 utils::TPanic<utils::PreconditionPanic>::TPanic(char const*, char const*, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) + 168
#2	0x101131c84 utils::PreconditionPanic::PreconditionPanic(char const*, char const*, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) + 68
#3	0x101130478 utils::PreconditionPanic::PreconditionPanic(char const*, char const*, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) + 52
#4	0x101130244 utils::TPanic<utils::PreconditionPanic>::panic(char const*, char const*, int, char const*, ...) + 228
#5	0x101109714 filament::SamplerInterfaceBlock::getSamplerInfo(std::__1::basic_string_view<char, std::__1::char_traits<char> >) const + 176
#6	0x100fa55ec filament::FMaterialInstance::setParameter(std::__1::basic_string_view<char, std::__1::char_traits<char> >, filament::backend::Handle<filament::backend::HwTexture>, filament::backend::SamplerParams) + 76
#7	0x100fa57e0 filament::FMaterialInstance::setParameterImpl(std::__1::basic_string_view<char, std::__1::char_traits<char> >, filament::FTexture const*, filament::TextureSampler const&) + 428
#8	0x100f024c8 filament::MaterialInstance::setParameter(char const*, unsigned long, filament::Texture const*, filament::TextureSampler const&) + 92
#9	0x100fcd6bc filament::MaterialInstance::setParameter(char const*, filament::Texture const*, filament::TextureSampler const&) + 76
#100x101241988 (anonymous namespace)::UbershaderProvider::createMaterialInstance(filament::gltfio::MaterialKey*, std::__1::array<filament::gltfio::UvSet, 8ul>*, char const*, char const*) + 2080
#110x10118c858 filament::gltfio::FAssetLoader::createMaterialInstance(cgltf_data const*, cgltf_material const*, std::__1::array<filament::gltfio::UvSet, 8ul>*, bool) + 452
#120x101189dd4 filament::gltfio::FAssetLoader::createRenderable(cgltf_data const*, cgltf_node const*, utils::Entity, char const*) + 656
#130x101189160 filament::gltfio::FAssetLoader::recurseEntities(cgltf_data const*, cgltf_node const*, utils::bitset<unsigned int, 1ul, void>, utils::Entity, filament::gltfio::FFilamentInstance*) + 964
#140x101189278 filament::gltfio::FAssetLoader::recurseEntities(cgltf_data const*, cgltf_node const*, utils::bitset<unsigned int, 1ul, void>, utils::Entity, filament::gltfio::FFilamentInstance*) + 1244
#150x101187b9c filament::gltfio::FAssetLoader::createInstance(cgltf_data const*) + 528
#160x101187560 filament::gltfio::FAssetLoader::createInstances(cgltf_data const*, unsigned long) + 72
#170x101186c2c filament::gltfio::FAssetLoader::createInstancedAsset(unsigned char const*, unsigned int, filament::gltfio::FilamentInstance**, unsigned long) + 416

Additional context
If the material key is like below

(filament::gltfio::MaterialKey) $0 = {
  doubleSided = true
  unlit = false
  hasVertexColors = true
  hasBaseColorTexture = false
  hasNormalTexture = false
  hasOcclusionTexture = false
  hasEmissiveTexture = false
  useSpecularGlossiness = false
  alphaMode = OPAQUE
  enableDiagnostics = false
   = {
     = (hasMetallicRoughnessTexture = false, metallicRoughnessUV = 0 '\0')
     = (hasSpecularGlossinessTexture = false, specularGlossinessUV = 0 '\0')
  }
  baseColorUV = '\0' 0 '\0'
  hasClearCoatTexture = false
  clearCoatUV = '\0' 0 '\0'
  hasClearCoatRoughnessTexture = false
  clearCoatRoughnessUV = '\0' 0 '\0'
  hasClearCoatNormalTexture = false
  clearCoatNormalUV = '\0' 0 '\0'
  hasClearCoat = false
  hasTransmission = false
  hasTextureTransforms = false
  emissiveUV = '\0' 0 '\0'
  aoUV = '\0' 0 '\0'
  normalUV = '\0' 0 '\0'
  hasTransmissionTexture = false
  transmissionUV = '\0' 0 '\0'
  hasSheenColorTexture = false
  sheenColorUV = '\0' 0 '\0'
  hasSheenRoughnessTexture = false
  sheenRoughnessUV = '\0' 0 '\0'
  hasVolumeThicknessTexture = false
  volumeThicknessUV = '\0' 0 '\0'
  hasSheen = false
  hasIOR = true
  hasVolume = false
  padding = '\0' 0 '\0'
}

then a queried material from ubershader has the sampler interface block like below.

(const filament::SamplerInterfaceBlock) $0 = {
  mName = {
     = {
      mCStr = 0x00006000009a0e44 "MaterialParams"
      mData = 0x00006000009a0e44
    }
  }
  mStageFlags = ALL_SHADER_STAGE_FLAGS
  mSamplersInfoList = {
    mData = 0x0000600003efb860
    mSize = 7
    mCapacityAllocator = {
      utils::FixedCapacityVector<filament::SamplerInterfaceBlock::SamplerInfo, std::__1::allocator<filament::SamplerInterfaceBlock::SamplerInfo>, true>::SizeTypeWrapper<unsigned int> = (value = 7)
    }
  }
  mInfoMap = size=7 {
    [0] = (first = "volumeThicknessMap", second = 6)
    [1] = (first = "transmissionMap", second = 5)
    [2] = (first = "normalMap", second = 2)
    [3] = (first = "occlusionMap", second = 3)
    [4] = (first = "metallicRoughnessMap", second = 1)
    [5] = (first = "emissiveMap", second = 4)
    [6] = (first = "baseColorMap", second = 0)
  }
}

[daemyung]

I create #6122 and this changes fix this crash. But I'm not sure it's a correct fix. Because both options can be used at the same time.