lib: define `kEnumerableProperty` atomically #7456

Job	Run time
Build slim tarball	1m 38s
aarch64-linux: Cache V8 build	27s
aarch64-darwin: with shared libraries	25m 49s
x86_64-darwin: with shared libraries	54m 44s
x86_64-linux: with shared libraries	30m 54s
aarch64-linux: with shared boringssl-0.20260508.0	24m 54s
aarch64-linux: with shared openssl-1.1.1w	24m 19s
aarch64-linux: with shared openssl-3.0.20	25m 28s
aarch64-linux: with shared openssl-3.5.6	25m 46s
aarch64-linux: with shared openssl-4.0.0	25m 30s
aarch64-linux: with shared openssl-3.6.2	25m 29s
	4h 24m 58s

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