[clang] [clang-tools-extra] feat: highlight for import, export keyword of CXX Module (PR #204511)

[via cfe-commits]

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@@ -5151,22 +5154,26 @@ class ImportDecl final : public Decl,
 /// \code
 ///   export void foo();
 /// \endcode
-class ExportDecl final : public Decl, public DeclContext {
-  LLVM_DECLARE_VIRTUAL_ANCHOR_FUNCTION();
+class ExportDecl final : public NamedDecl, public DeclContext {
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Decodetalkers wrote:

But we need it become NamedDecl, so that it can be used in highlight

https://github.com/llvm/llvm-project/pull/204511