[clang] Insert headers in global module fragment (PR #151624)

[Mythreya Kuricheti via cfe-commits]

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@@ -115,6 +134,7 @@ unsigned getOffsetAfterHeaderGuardsAndComments(StringRef FileName,
               return SM.getFileOffset(Tok.getLocation());
             return 0;
           }));
+  return std::max(HeaderAndPPOffset, ModuleDecl);
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MythreyaK wrote:

This does read better, yeah. Will push after current CI run to prevent a restart.

https://github.com/llvm/llvm-project/pull/151624