use test monsters in shotgun tests (#79141) #16189

Job	Run time
Create Release	19s
Windows Tiles x64 MSVC	27m 37s
Windows Tiles Sounds x64 MSVC	26m 19s
Linux Tiles x64	23m 59s
Linux Tiles Sounds x64	23m 13s
Linux Curses x64	20m 38s
macOS Curses Universal Binary (x64 and arm64)	51m 22s
macOS Tiles Universal Binary (x64 and arm64)	49m 50s
Android x64	15m 3s
Android x32	15m 5s
Android Bundle	16m 29s
WebAssembly Bundle	1h 44m 8s
	6h 14m 2s

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