checker: fix wrong overload operator checking for generic aliased typ… #7264

Job	Run time
tests-sanitize-address-clang	2h 4m 23s
tests-sanitize-address-gcc	2h 29m 38s
tests-sanitize-address-msvc	3m 46s
tests-sanitize-memory-clang	3h 15m 55s
tests-sanitize-undefined-clang	58m 16s
tests-sanitize-undefined-gcc	1h 32m 25s
	10h 24m 23s

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