[build] Fix V8 related bzlmod paths, switch to new bazel-lib

[fhanau]

• Remove unused bazel_features dependency

Downstream PR to follow.

[codspeed-hq]

Merging this PR will degrade performance by 11.82%

❌ 2 regressed benchmarks
✅ 68 untouched benchmarks
⏩ 129 skipped benchmarks¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
❌	Encode_ASCII_256[TextEncoder][0/0/256]	3.1 ms	3.6 ms	-11.82%
❌	simpleStringBody[Response]	19.3 µs	21.7 µs	-11.16%

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_{Comparing felix/011726-build (bbf62b3) with main (b74fbe4)}

Footnotes

1. 129 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩