OpenXR - Ensure we have a valid poses after app event #9918

Job	Run time
build-uwp	9m 36s
build-windows (x64)	9m 46s
build (ubuntu-latest, test, clang, clang++, ./b.sh --headless --unittest, clang-normal)	3m 2s
build_test_headless_alpine	12m 54s
build-windows (ARM64)	9m 49s
build (ubuntu-latest, gcc, g++, ./b.sh --headless --unittest, gcc-normal)	3m 27s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=arm64-v8a UNITTE...	10m 13s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=armeabi-v7a UNIT...	6m 14s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=x86_64 UNITTEST=...	9m 48s
build (ubuntu-latest, android, clang, clang++, cd android && ./ab.sh -j2 APP_ABI=arm64-v8a OPENXR...	9m 26s
build (ubuntu-latest, android, clang, clang++, ./b.sh --libretro_android ppsspp_libretro, android...	5m 24s
build (ubuntu-latest, qt, gcc, g++, ./b.sh --qt, qt)	3m 45s
build (ubuntu-latest, libretro, gcc, g++, make -C libretro -f Makefile -j2, gcc-libretro)	2m 28s
build (ubuntu-latest, libretro, clang, clang++, make -C libretro -f Makefile -j2, clang-libretro)	2m 46s
build (macos-latest, test, clang, clang++, ./b.sh --headless --unittest --fat --no-png --no-sdl2,...	11m 41s
build (macos-latest, ios, clang, clang++, ./b.sh --ios, ios)	3m 56s
test-windows	38s
test (ubuntu-latest)	1m 2s
test (macos-latest)	42s
	1h 56m 37s

Provide feedback