[clang-tools-extra] [clang-tidy] Make `bugprone-unhandled-self-assignment` check more general (PR #147066)

[Andrey Karlov via cfe-commits]

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@@ -189,6 +189,12 @@ Changes in existing checks
   calls of ``std::string`` constructor with char pointer, start position and
   length parameters.
 
+- Improved :doc:`bugprone-unhandled-self-assignment
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negativ wrote:

@EugeneZelenko fixed

https://github.com/llvm/llvm-project/pull/147066