Further fixes and improvements related to WebAssembly #12961

Job	Run time
Code style check / Code style check	10s
IWYU / IWYU	4m 2s
CodeChecker / CodeChecker	32m 19s
MSVC / MSVC (SDL2 x86)	4m 18s
MSVC / MSVC (SDL2 x64)	4m 30s
SonarCloud Analyzer / SonarCloud Analyzer	0s
Android / Android	9m 45s
Make / Make (Linux x86-64 SDL2 Release)	3m 5s
Make / Make (PS Vita)	10m 0s
Make / Make (Nintendo Switch)	3m 13s
Make / Make (Linux x86-64 SDL2 Debug)	3m 8s
Make / Make (Linux ARM64 SDL2 Release)	4m 18s
CMake / CMake (Linux SDL2)	3m 3s
CMake / CMake (macOS SDL2)	1m 35s
CMake / CMake (Windows SDL2)	5m 5s
Make / Make (Emscripten)	5m 14s
Make / Make (Linux ARM64 SDL2 Debug)	5m 7s
CMake / CMake (macOS SDL2 App Bundle)	1m 46s
Make / Make (macOS SDL2)	3m 44s
Make / Make (macOS SDL2 App Bundle)	1m 43s
	1h 46m 5s

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