cpu-features: Ignore CET SS unless actively used #1610

Job	Run time
gir	55s
cross (windows-x86_64-mingw, --host=x86_64-w64-mingw32 --without-prebuilds=sdk:host, g++-mingw-w6...	3m 9s
native (windows-x86_64, "windows-latest")	3m 5s
native (windows-x86, "windows-latest")	3m 11s
cross (windows-x86-mingw, --host=i686-w64-mingw32 --without-prebuilds=sdk:host, g++-mingw-w64-i686)	2m 45s
native (macos-x86_64, "macos-13")	2m 51s
cross (linux-mips, --host=mips-linux-gnu, g++-mips-linux-gnu)	1m 31s
native (macos-arm64, "macos-latest")	1m 46s
cross (linux-mipsel, --host=mipsel-linux-gnu, g++-mipsel-linux-gnu)	1m 25s
native (linux-x86_64, "ubuntu-latest")	1m 49s
manylinux (x86)	2m 27s
cross (linux-mips64, --host=mips64-linux-gnuabi64, g++-mips64-linux-gnuabi64)	1m 20s
native (linux-x86, "ubuntu-latest")	2m 12s
manylinux (x86_64)	2m 19s
native (freebsd-arm64, ["self-hosted", "freebsd", "arm64"])	1s
cross (linux-mips64el, --host=mips64el-linux-gnuabi64, g++-mips64el-linux-gnuabi64)	1m 21s
manylinux (x86_64-musl)	2m 0s
manylinux (armhf)	2m 1s
qnx-armeabi	3m 1s
manylinux (arm64)	2m 9s
mobile (ios-arm64)	6h 0m 2s
manylinux (arm64-musl)	2m 2s
mobile (android-x86)	1m 36s
manylinux (mips)	1m 42s
mobile (android-x86_64)	1m 38s
manylinux (mipsel)	1m 35s
mobile (android-arm)	1m 41s
manylinux (mips64)	1m 39s
mobile (android-arm64)	6m 23s
manylinux (mips64el)	1m 35s
	7h 1m 11s

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