[clang-tools-extra] [clang-reorder-fields] Support designated initializers (PR #142150)

[Clement Courbet via cfe-commits]

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@@ -289,35 +321,213 @@ static void reorderFieldsInConstructor(
                      Replacements);
 }
 
+/// Replacement for broken InitListExpr::isExplicit function.
+/// TODO: Remove when InitListExpr::isExplicit is fixed.
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legrosbuffle wrote:

s/TODO/FIXME/

If there and open bug for this ?

https://github.com/llvm/llvm-project/pull/142150