lib: prefer primordials in SubtleCrypto #4177

Job	Run time
Build slim tarball	1m 55s
aarch64-darwin: with shared libraries	17m 33s
x86_64-linux: with shared libraries	21m 50s
aarch64-linux: with shared libraries	18m 33s
x86_64-darwin: with shared libraries	30m 44s
	1h 30m 35s

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