[clang] [C++20][Modules] Implement P1857R3 Modules Dependency Discovery (PR #107168)

[Corentin Jabot via cfe-commits]

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@@ -2516,8 +2490,17 @@ Decl *Parser::ParseModuleImport(SourceLocation AtLoc,
       SeenError = false;
     break;
   }
-  ExpectAndConsumeSemi(diag::err_module_expected_semi);
-  TryConsumeToken(tok::eod);
+
+  bool DontSeeSemi = false;
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cor3ntin wrote:

can we avoid negations?
```suggestion
  bool LexedSemi;
```

https://github.com/llvm/llvm-project/pull/107168