[clang] [clang][AST] Invalidate DecompositionDecl if it has invalid initializer. (PR #72428)

[via cfe-commits]

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@@ -24,4 +24,17 @@ void test() {
   auto b4 = A(1);
   // CHECK: `-VarDecl {{.*}} invalid b5 'auto'
   auto b5 = A{1};
-}
\ No newline at end of file
+}
+
+void pr72198() {
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cor3ntin wrote:

```suggestion
void GH72198() {
```

https://github.com/llvm/llvm-project/pull/72428