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

[Carlos Galvez via cfe-commits]

https://github.com/carlosgalvezp requested changes to this pull request.

We should fix `IgnoreSingleElementAggregates` instead.

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