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568eccd7f8
fixes #25617 This pull request introduces a stricter check for parameter type relations in the `procParamTypeRel` procedure. Specifically, it ensures that two types are not only structurally equal but also have the same backend type, taking type aliases into account. Type relation checks: * [`compiler/sigmatch.nim`](diffhunk://#diff-251afcd01d239369019495096c187998dd6695b6457528953237a7e4a10f7138R787-R789): In `procParamTypeRel`, added a check to ensure that if two types are considered equal (`isEqual`), they must also have the same backend type (using `sameBackendTypePickyAliases`). If not, the result is set to `isNone`, preventing false positives when type aliases differ.