[clang] [clang][ASTImporter] Improve structural equivalence of overloadable operators. (PR #72242)

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https://github.com/DonatNagyE commented:

As you write that unifying these different but equivalent expressions could've unintended consequences, perhaps you should check the effects of this change on CTU analysis of modern (a.k.a. crazy) C++ projects (or publish the results if you already did so).

Otherwise I can't find any problem in this code, but I'm not familiar enough with these intricate details of the standard, so this opinion is not too relevant.

https://github.com/llvm/llvm-project/pull/72242