[clang] [clang-format] Handle common C++ non-keyword types as such (PR #83709)

[Owen Pan via cfe-commits]

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@@ -66,13 +72,17 @@ bool FormatToken::isSimpleTypeSpecifier() const {
   case tok::kw_decltype:
   case tok::kw__Atomic:
     return true;
+  case tok::identifier:
+    return IsCpp && std::binary_search(CppNonKeywordTypes.begin(),
+                                       CppNonKeywordTypes.end(), TokenText);
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owenca wrote:

There’s no C per se in clang-format. `IsCpp` by clang-format convention means C/C++/Objective-C/
Objective-C++.

https://github.com/llvm/llvm-project/pull/83709