Windows: force UTF-8 code page for app and samples #1362

Job	Run time
Emscripten	2m 38s
FreeBSD	4m 42s
macOS-deps=enabled	1m 26s
MSYS2-UCRT64-deps=enabled	4m 43s
MSYS2-CLANG64-deps=enabled	3m 22s
MSYS2-UCRT64-deps=disabled	3m 18s
macOS-deps=disabled	56s
MSYS2-CLANG64-deps=disabled	2m 29s
Linux-GCC7-deps=forcefallback	8m 35s
Linux-Clang7-deps=forcefallback	8m 42s
Linux-GCC7-deps=default	1m 16s
Linux-Clang7-deps=default	1m 13s
Linux-GCC13-deps=forcefallback	9m 35s
Linux-GCC13-deps=default	1m 53s
Linux-Clang19-deps=forcefallback	10m 22s
MSVC-forcefallback-x64	4m 17s
Linux-Clang19-deps=default	2m 45s
MSVC-forcefallback-x86	4m 48s
MSVC-default-x64	2m 52s
clang-cl-forcefallback	5m 2s
MSVC-default-x86	2m 38s
clang-cl-default	3m 51s
	1h 31m 23s

Provide feedback