[clang] [clang-format] fix incorrectly indents lambda trailing return (PR #94560)

[Björn Schäpers via cfe-commits]

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@@ -1457,7 +1457,7 @@ unsigned ContinuationIndenter::getNewLineColumn(const LineState &State) {
       !Current.isOneOf(tok::colon, tok::comment)) {
     return ContinuationIndent;
   }
-  if (Style.isCpp() && Current.is(tok::arrow) &&
+  if (Style.isCpp() && Current.is(TT_TrailingReturnArrow) &&
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HazardyKnusperkeks wrote:

I also think you can drop the `isCpp`.

https://github.com/llvm/llvm-project/pull/94560