[clang] [clang-tools-extra] [clangd] [AST] Handle uninitialized type constraints (PR #110496)

[Florian Albrechtskirchinger via cfe-commits]

================
@@ -1899,7 +1899,7 @@ void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
   Record.push_back(D->wasDeclaredWithTypename());
 
   const TypeConstraint *TC = D->getTypeConstraint();
-  assert((bool)TC == D->hasTypeConstraint());
+  Record.push_back(TC != nullptr); // reflects TypeConstraintInitialized
----------------
falbrechtskirchinger wrote:

Done.

https://github.com/llvm/llvm-project/pull/110496