Fix validation of `Literal` from JSON keys when used as `dict` key #3963

Job	Run time
rust benchmarks	3m 0s
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 sdist	16s
build-wasm-emscripten	2m 34s
coverage	2m 4s
lint	52s
test-debug 3.11	59s
test-debug pypy3.10	1m 24s
test on ubuntu	2m 13s
test-pydantic-integration	1m 32s
test on macos	5m 43s
test on windows	4m 55s
test 3.7	2m 2s
test 3.8	2m 9s
test 3.9	2m 13s
test 3.10	2m 9s
test 3.11	2m 13s
test 3.12	2m 4s
test pypy3.7	3m 0s
test pypy3.8	2m 34s
test pypy3.9	2m 42s
test pypy3.10	2m 43s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
inspect-pypi-assets	0s
check	2s
release	0s
	49m 23s

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