Support serialization mode specification from model config and `SerializationConfig` #4159

Job	Run time
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 57s
build sdist	18s
build-wasm-emscripten	2m 43s
coverage	2m 24s
lint	41s
test-debug 3.11	1m 5s
test on ubuntu	2m 9s
test-debug pypy3.10	1m 20s
test on macos	5m 9s
test on windows	4m 14s
test-pydantic-integration	1m 34s
test 3.8	2m 10s
test 3.9	2m 12s
test 3.10	2m 14s
test 3.11	2m 4s
test 3.12	2m 29s
test pypy3.9	2m 40s
test pypy3.10	2m 46s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
inspect-pypi-assets	0s
check	4s
release	0s
	41m 13s

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