util: fix numericSeparator handling for scientific notation #6002

Job	Run time
collect-openssl-versions	7s
Build slim tarball	2m 55s
aarch64-linux: Cache V8 build	4s
aarch64-darwin: with shared libraries	28m 30s
x86_64-darwin: with shared libraries	50m 14s
x86_64-linux: with shared libraries	31m 42s
aarch64-linux: with shared openssl_3 (3.0.19)	26m 29s
aarch64-linux: with shared openssl_3_6 (3.6.1)	26m 15s
aarch64-linux: with shared openssl_3_5 (3.5.5)	25m 54s
aarch64-linux: with shared openssl_1_1 (1.1.1w)	25m 45s
aarch64-linux: with shared openssl_4_0 (4.0.0)	26m 7s
	4h 4m 2s

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