Autoload script ignore metadata

[StanleySweet]

Tested versions

4.3 dev 5

System information

Windows 11 - Godot v4.3. Dev5 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1070 (nvidia, 2215886848) -Intel Core i7-8750H @ 2.20GHz, 2.21 GHz 12 threads

Issue description

Like all RefCounted objects Scripts expose metadata properties that could be used to set some things at run time like for instance sounds. However in the case of Autoloaded scripts it seems these metadata are unavailable.

E 0:00:01:0162   AutoloadedScript.gd:4 @ _ready(): The object does not have any 'meta' values with the key 'MissingField'.
  <C++ Error>    Method/function failed. Returning: Variant()
  <C++ Source>   core/object/object.cpp:1041 @ get_meta()
  <Stack Trace>  AutoloadedScript.gd:4 @ _ready()

Steps to reproduce

Load the MRP and launch the project. Notice there is now an error about metadata not being found.

Minimal reproduction project (MRP)

meta-bug-repro.zip

[timothyqiu]

Not only Autoloads, but all script resources can't save metadata. See #84653.

[AThousandShips]

Thank you for reporting, consolidating in:

• Metadata on resources that are saved as non-Godot resource files (such as GDScript or text-based shaders) aren't saved #84653

As this is related to all metadata for scripts