[clang] [clang] print correct context for diagnostics suppressed by deduction (PR #125453)

[Younan Zhang via cfe-commits]

================
@@ -1909,7 +1909,22 @@ class Sema final : public SemaBase {
   /// '\#pragma clang attribute push' directives to the given declaration.
   void AddPragmaAttributes(Scope *S, Decl *D);
 
-  void PrintPragmaAttributeInstantiationPoint();
+  using DiagFuncRef =
+      llvm::function_ref<void(SourceLocation, PartialDiagnostic)>;
+  auto getDefaultDiagFunc() {
+    return [this](SourceLocation Loc, PartialDiagnostic PD) {
+      // This bypasses a lof of the filters in the diag engine, as it's
----------------
zyn0217 wrote:

```suggestion
      // This bypasses a lot of the filters in the diag engine, as it's
```

https://github.com/llvm/llvm-project/pull/125453