module: add --experimental-strip-private-modules #7857

Job	Run time
Build slim tarball	1m 28s
aarch64-linux: Cache V8 build	23s
x86_64-darwin: with shared libraries	46m 34s
aarch64-darwin: with shared libraries	28m 8s
x86_64-linux: with shared libraries	30m 1s
aarch64-linux: with shared boringssl-0.20260526.0	25m 8s
aarch64-linux: with shared openssl-3.0.20	26m 41s
aarch64-linux: with shared openssl-3.6.2	25m 20s
aarch64-linux: with shared openssl-4.0.0	25m 34s
aarch64-linux: with shared openssl-3.5.6	26m 4s
aarch64-linux: with shared openssl-1.1.1w	25m 43s
	4h 21m 4s

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