[clang] [clang-format] Allow decltype in requires clause (PR #78847)

[Owen Pan via cfe-commits]

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@@ -1071,6 +1071,16 @@ TEST_F(TokenAnnotatorTest, UnderstandsRequiresClausesAndConcepts) {
                     "concept C = (!Foo<T>) && Bar;");
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owenca wrote:

+1. You don't even need to create a pull request for this kind of NFC changes.

https://github.com/llvm/llvm-project/pull/78847