Validate default values at schema definition #5542

Job	Run time
rust benchmarks	3m 22s
build sdist	23s
build on ${{ matrix.os }} (${{ matrix.target }} - ${{ matrix.interpreter \|\| 'all' }}${{ (((matrix.os == 'linux') && format(' - {0}', (((matrix.manylinux == 'auto') && 'manylinux') \|\| matrix.manylinux))) \|\| '') }})	0s
build pgo-optimized on ${{ matrix.os }} / ${{ matrix.interpreter }}	0s
build-wasm-emscripten	2m 36s
coverage	2m 3s
lint	59s
test-debug 3.13	1m 3s
test MSRV	3m 9s
test-debug pypy3.10	1m 9s
test on ubuntu	1m 57s
test-pydantic-integration	1m 18s
test on macos	1m 51s
test on windows	5m 22s
test 3.8	1m 17s
test 3.9	1m 26s
test 3.10	1m 58s
test 3.11	1m 38s
test 3.12	1m 34s
test 3.13	2m 6s
test pypy3.9	1m 32s
test pypy3.10	2m 2s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
inspect-pypi-assets	0s
check	2s
release	0s
	38m 47s

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