Optimized traversal of schema tree for schema cleaning (`GenerateSchema.clean_schema`) #5184

Job	Run time
build sdist	22s
build pgo-optimized on ${{ matrix.os }} / ${{ matrix.interpreter }}	0s
build on ${{ matrix.os }} (${{ matrix.target }} - ${{ matrix.interpreter \|\| 'all' }}${{ (((matrix.os == 'linux') && format(' - {0}', (((matrix.manylinux == 'auto') && 'manylinux') \|\| matrix.manylinux))) \|\| '') }})	0s
rust benchmarks	2m 19s
build-wasm-emscripten	2m 37s
coverage	2m 4s
lint	1m 17s
test-debug 3.13	1m 0s
test-debug pypy3.10	1m 16s
test MSRV	2m 32s
test on ubuntu	1m 53s
test-pydantic-integration	2m 35s
test 3.8	1m 56s
test 3.9	2m 5s
test on macos	1m 27s
test 3.10	1m 52s
test on windows	4m 16s
test 3.11	1m 46s
test 3.12	2m 4s
test 3.13	1m 56s
test pypy3.9	2m 4s
test pypy3.10	2m 10s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
inspect-pypi-assets	0s
check	1s
release	0s
	39m 32s

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