[clang] [clang-format] Don't count template template parameter as declaration (PR #95025)

[Owen Pan via cfe-commits]

================
@@ -584,6 +584,23 @@ TEST_F(TokenAnnotatorTest, UnderstandsNonTemplateAngleBrackets) {
   EXPECT_TOKEN(Tokens[20], tok::greater, TT_BinaryOperator);
 }
 
+TEST_F(TokenAnnotatorTest, UnderstandsTemplateTemplateParameters) {
+  auto Tokens = annotate("template <template <typename...> typename X,\n"
+                         "          template <typename...> typename Y,\n"
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owenca wrote:

```suggestion
                         "          template <typename...> class Y,\n"
```
To cover both type-parameter keys.

https://github.com/llvm/llvm-project/pull/95025