[clang] [Clang] Improve diagnostics for 'placement new' with const storage argument (PR #144270)

[Corentin Jabot via cfe-commits]

================
@@ -690,6 +690,9 @@ Improvements to Clang's diagnostics
 - Clang now tries to avoid printing file paths that contain ``..``, instead preferring
   the canonical file path if it ends up being shorter.
 
+- Improve the diagnostics for placement new expression when const-qualified
+  object was passed as the storage argument.
----------------
cor3ntin wrote:

```suggestion
  object was passed as the storage argument. (#GH143708)
```

https://github.com/llvm/llvm-project/pull/144270