[clang-tools-extra] [clang-tidy] Avoid diagnosing std::array initializations for modernize-use-designated-initializers (PR #134774)

[Carlos Galvez via cfe-commits]

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@@ -182,6 +182,11 @@ Changes in existing checks
   ``constexpr`` and ``static``` values on member initialization and by detecting
   explicit casting of built-in types within member list initialization.
 
+- Improved :doc:`modernize-use-designated-initializers
+  <clang-tidy/checks/modernize/use-designated-initializers>` check by avoiding
+  diagnosing designated initializers for ``std::array`` initializations when
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carlosgalvezp wrote:

Please document this exception also in `IgnoreSingleElementAggregates`

https://github.com/llvm/llvm-project/pull/134774