Always build x264/x265 #979

Job	Run time
build (macos-13, x86_64, bash)	35m 1s
build (ubuntu-24.04-arm, aarch64, bash)	46m 36s
build (ubuntu-24.04, x86_64, bash)	1h 14m 5s
build (ubuntu-24.04, i686, bash)	52m 31s
build (windows-latest, AMD64, msys2 {0}, mingw-w64-x86_64, MINGW64)	1h 28m 59s
build (macos-14, arm64, bash)	14m 37s
	5h 11m 49s

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