[clang] [Serialization] Load Specializations Lazily (PR #76774)

[Vassil Vassilev via cfe-commits]

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@@ -100,6 +100,11 @@ ExternalASTSource::FindExternalVisibleDeclsByName(const DeclContext *DC,
   return false;
 }
 
+void ExternalASTSource::LoadExternalSpecializations(
+    const Decl *D, ArrayRef<TemplateArgument> TemplateArgs) {
+  return;
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vgvassilev wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/76774