[clang] [clang] Support DecompositionDecl in -ast-print (PR #221711)

[Aaron Ballman via cfe-commits]

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@@ -0,0 +1,89 @@
+// RUN: %clang_cc1 -std=c++26 -ast-print %s | FileCheck %s
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AaronBallman wrote:

Does something about the test require C++26?

https://github.com/llvm/llvm-project/pull/221711