[clang] [Clang] Require base element type of `__has_unique_object_representations` to be complete (PR #95432)

[Shafik Yaghmour via cfe-commits]

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@@ -2791,6 +2791,12 @@ bool ASTContext::hasUniqueObjectRepresentations(
     return hasUniqueObjectRepresentations(getBaseElementType(Ty),
                                           CheckIfTriviallyCopyable);
 
+  if (Ty->isVoidType())
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shafik wrote:

It is not clear why we need this change as well.

https://github.com/llvm/llvm-project/pull/95432