[clang] [Clang] Do not create dependent CallExpr having UnresolvedLookupExpr inside non-dependent context (PR #124609)

[via cfe-commits]

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@@ -337,6 +337,7 @@ Bug Fixes to C++ Support
 - Fixed an assertion failure affecting code that uses C++23 "deducing this". (#GH130272)
 - Clang now properly instantiates destructors for initialized members within non-delegating constructors. (#GH93251)
 - Correctly diagnoses if unresolved using declarations shadows template paramters (#GH129411)
+- Fixed a clang regression on c++20 mode where unresolved dependent call expressions were created inside non-dependent context (#GH122892)
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Sirraide wrote:

```suggestion
- Fixed a Clang regression in C++20 mode where unresolved dependent call expressions were created inside non-dependent contexts (#GH122892)
```

https://github.com/llvm/llvm-project/pull/124609