Matheus Izvekov 227e88b943
[clang-tidy] fix misc-unconventional-assign-operator entity match (#154430)
Makes sure UnconventionalAssignOperatorCheck checks if the types
reference the same entity, not the exact declaration.

This adds a new matcher to support this check.

This fixes a regression introduced by #147835. Since this regression was
never released, there are no release notes.

Fixes #153770
2025-08-19 19:28:41 -03:00
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