Fix `definition-ref` bug with `Dict` keys #3752

Job	Run time
build on ${{ matrix.platform \|\| matrix.os }} (${{ matrix.target }} - ${{ matrix.manylinux \|\| 'auto' }})	0s
rust benchmarks	5m 48s
build pgo-optimized on ${{ matrix.platform \|\| matrix.os }} (${{ matrix.interpreter }} - ${{ matrix.target }} - ${{ matrix.manylinux \|\| 'auto' }})	0s
build sdist	17s
build-wasm-emscripten	4m 11s
coverage	4m 46s
lint	1m 18s
test-debug 3.11	1m 21s
test-debug pypy3.10	2m 5s
test on ubuntu	2m 50s
test-pydantic-integration	2m 9s
test on macos	5m 40s
test on windows	5m 23s
test 3.7	2m 51s
test 3.8	3m 0s
test 3.9	2m 59s
test 3.10	3m 2s
test 3.11	3m 11s
test 3.12-dev	3m 34s
test pypy3.7	3m 38s
test pypy3.8	3m 15s
test pypy3.9	3m 7s
test pypy3.10	3m 24s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
inspect-pypi-assets	0s
check	4s
release	0s
	1h 7m 53s

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