crypto: rename CShakeParams and KmacParams length to outputLength #4306

Job	Run time
Build slim tarball	2m 8s
aarch64-darwin: with shared libraries	24m 7s
x86_64-darwin: with shared libraries	30m 22s
x86_64-linux: with shared libraries	20m 10s
aarch64-linux: with shared libraries	17m 54s
	1h 34m 41s

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