fs: fix glob case-sensitivity inconsistencies #7014

Job	Run time
Build slim tarball	1m 10s
x86_64-linux: with shared libraries	32m 27s
aarch64-linux: Cache V8 build	26s
x86_64-darwin: with shared libraries	43m 8s
aarch64-darwin: with shared libraries	29m 4s
aarch64-linux: with shared openssl-1.1.1w	26m 0s
aarch64-linux: with shared openssl-3.5.5	25m 31s
aarch64-linux: with shared openssl-4.0.0	26m 5s
aarch64-linux: with shared boringssl-0.20260413.0	25m 45s
aarch64-linux: with shared openssl-3.0.19	26m 19s
aarch64-linux: with shared openssl-3.6.1	25m 40s
	4h 21m 35s

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