[clang] [Modules] Delay deserialization of preferred_name attribute at r… (PR #122726)

[Chuanqi Xu via cfe-commits]

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@@ -3240,6 +3244,7 @@ def PreferredName : InheritableAttr {
   let InheritEvenIfAlreadyPresent = 1;
   let MeaningfulToClassTemplateDefinition = 1;
   let TemplateDependent = 1;
+  let DeferDeserialization = 1;
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ChuanqiXu9 wrote:

Maybe it is better to add comment here to explain why we want to defer PreferredName.

https://github.com/llvm/llvm-project/pull/122726