Refactor to use C++ implementation of requirement gathering for Python. #12074

Job	Run time
fixup / block-fixup	7s
fixup / block-fixup	7s
labels / InternalPRRequired	1s
labels / InternalPRRequired	1s
lint / bazel	2m 6s
lint / bazel	2m 6s
test (linux, ubuntu-22.04) / bazel	2m 32s
test (linux, ubuntu-22.04) / bazel	2m 32s
test (linux, ubuntu-22.04, -asan) / bazel	2m 21s
test (linux, ubuntu-22.04, -asan) / bazel	2m 21s
test (linux-arm, ubuntu-22.04-arm, -debug) / bazel	5m 30s
test (linux-arm, ubuntu-22.04-arm, -debug) / bazel	5m 30s
test (linux-arm, ubuntu-22.04-arm) / bazel	2m 0s
test (linux-arm, ubuntu-22.04-arm) / bazel	4m 27s
test (macOS, macos-15) / bazel	2m 36s
test (macOS, macos-15) / bazel	2m 36s
test (windows, windows-2025) / bazel	18m 39s
test (windows, windows-2025) / bazel	18m 39s
Run workers-sdk tests	0s
Run workers-sdk tests	5m 22s
	1h 19m 33s

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