src: merge `CreateEnvironment()` overloads #7324

Job	Run time
Build slim tarball	1m 5s
aarch64-linux: Cache V8 build	25s
aarch64-darwin: with shared libraries	24m 35s
x86_64-darwin: with shared libraries	46m 3s
x86_64-linux: with shared libraries	31m 41s
aarch64-linux: with shared openssl-4.0.0	25m 34s
aarch64-linux: with shared boringssl-0.20260508.0	26m 3s
aarch64-linux: with shared openssl-3.6.2	26m 1s
aarch64-linux: with shared openssl-3.0.20	26m 15s
aarch64-linux: with shared openssl-3.5.6	25m 42s
aarch64-linux: with shared openssl-1.1.1w	25m 12s
	4h 18m 36s

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