[clang] [Clang][Sema] Make UnresolvedLookupExprs in class scope explicit specializations instantiation dependent (PR #100392)

[Matheus Izvekov via cfe-commits]

================
@@ -8629,13 +8629,14 @@ ASTNodeImporter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
     return UnresolvedLookupExpr::Create(
         Importer.getToContext(), *ToNamingClassOrErr, *ToQualifierLocOrErr,
         *ToTemplateKeywordLocOrErr, ToNameInfo, E->requiresADL(), &ToTAInfo,
-        ToDecls.begin(), ToDecls.end(), KnownDependent);
+        ToDecls.begin(), ToDecls.end(), KnownDependent,
+        E->isInstantiationDependent());
   }
 
   return UnresolvedLookupExpr::Create(
       Importer.getToContext(), *ToNamingClassOrErr, *ToQualifierLocOrErr,
       ToNameInfo, E->requiresADL(), ToDecls.begin(), ToDecls.end(),
-      /*KnownDependent=*/E->isTypeDependent());
+      /*KnownDependent=*/E->isTypeDependent(), E->isInstantiationDependent());
----------------
mizvekov wrote:

```suggestion
      /*KnownDependent=*/E->isTypeDependent(), /*KnownInstantiationDependent=*/E->isInstantiationDependent());
```

Nit: For consistency.

https://github.com/llvm/llvm-project/pull/100392