[clang] [Clang][Lex] Implement CWG3013: Error if #embed parameters were defined as macros (PR #224769)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,c,h -- clang/test/CXX/drs/cwg3013.cpp clang/test/Preprocessor/embed_cxx_compat.c clang/include/clang/Lex/Preprocessor.h clang/lib/Lex/PPDirectives.cpp clang/lib/Lex/Preprocessor.cpp clang/test/CXX/drs/cwg30xx.cpp --diff_from_common_commit
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Lex/PPDirectives.cpp b/clang/lib/Lex/PPDirectives.cpp
index bcf6a554b..35697284e 100644
--- a/clang/lib/Lex/PPDirectives.cpp
+++ b/clang/lib/Lex/PPDirectives.cpp
@@ -3771,8 +3771,8 @@ void Preprocessor::HandleElifFamilyDirective(Token &ElifToken,
 std::optional<LexEmbedParametersResult>
 Preprocessor::LexEmbedParameters(Token &CurTok, bool ForHasEmbed) {
   LexEmbedParametersResult Result{};
-    assert(!ForHasEmbed || isParsingIfOrElifDirective() &&
-           "__has_embed outside of #if or #elif directive?");
+  assert(!ForHasEmbed || isParsingIfOrElifDirective() &&
+                             "__has_embed outside of #if or #elif directive?");
   llvm::SaveAndRestore InEmbedParams(ParsingEmbedParameters, true);
   tok::TokenKind EndTokenKind = ForHasEmbed ? tok::r_paren : tok::eod;
 

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https://github.com/llvm/llvm-project/pull/224769