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

[Nathan Ridge 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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HighCommander4 wrote:

Technically, this function is no longer doing what its name says, `getOffsetAfterHeaderGuardsAndComments`.

Can we rename it to `getMinHeaderInsertionOffset`?

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