Add function names to type resolver errors and properly report when the return value is the conflicting type #149

Job	Run time
initialize	3s
build_sdist (ubuntu-22.04, 3.9)	49s
build (ubuntu-22.04, 3.9, cp39, false)	6m 40s
lint (ubuntu-22.04, 3.9)	33s
build (ubuntu-22.04, 3.10, cp310, false)	7m 26s
build (ubuntu-22.04, 3.11, cp311, false)	4m 24s
build (macos-12, 3.11, cp311, false)	16m 40s
build (macos-14, 3.11, cp311, false)	4m 8s
test (ubuntu-22.04, 3.11, false)	1m 39s
test_dependencies (ubuntu-20.04, 3.9, sqlalchemy>=2)	45s
test_dependencies (ubuntu-20.04, 3.9, sqlalchemy<2)	53s
	44m 0s

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