[clang] [clang-format] Hanlde qualified type name for `QualifierAlignment` (PR #125327)

[Owen Pan via cfe-commits]

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@@ -412,6 +414,15 @@ const FormatToken *LeftRightQualifierAlignmentFixer::analyzeLeft(
   // The case `const long long volatile int` -> `const volatile long long int`
   // The case `long volatile long int const` -> `const volatile long long int`
   if (TypeToken->isTypeName(LangOpts)) {
+    for (const auto *Prev = TypeToken->getPreviousNonComment();
+         Prev && Prev->is(tok::coloncolon);
+         Prev = Prev->getPreviousNonComment()) {
+      TypeToken = Prev;
+      Prev = Prev->getPreviousNonComment();
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owenca wrote:

I will replace `getPreviousNonComment()` with `Previous` for simplicity and better performance as we really don't need to be concerned about code like `::/**/std/**/::/**/int64_t`.

https://github.com/llvm/llvm-project/pull/125327