Disabled false positive.

.clang-tidy

@@ -17,6 +17,7 @@
 # misc-no-recursion is too noisy.
 # modernize-raw-string-literal is very noisy.
 # modernize-use-trailing-return-type is contrary to our style.
+# readability-avoid-unconditional-preprocessor-if is triggered on platform-specific code
 # readability-convert-member-functions-to-static is triggered for many callbacks.
 # readability-function-cognitive-complexity needed by UI constructors.
 # readability-isolate-declaration is noisy.
@@ -64,6 +65,7 @@ Checks:          >
   performance-*,
   portability-*,
   readability-*,
+  -readability-avoid-unconditional-preprocessor-if,
   -readability-convert-member-functions-to-static,
   -readability-function-cognitive-complexity,
   -readability-isolate-declaration,