[clang] [clang-format] Fix a bug in wrapping { after else (PR #161048)

[Björn Schäpers via cfe-commits]

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@@ -4089,6 +4088,11 @@ void TokenAnnotator::calculateFormattingInformation(AnnotatedLine &Line) const {
     }
   }
 
+  if (First->is(TT_ElseLBrace)) {
+    First->CanBreakBefore = true;
+    First->MustBreakBefore = true;
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HazardyKnusperkeks wrote:

Why `must`?

https://github.com/llvm/llvm-project/pull/161048