[clang] [clang][modules] Avoid calling expensive `SourceManager::translateFile()` (PR #86216)

[Ben Langmuir via cfe-commits]

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@@ -71,6 +71,7 @@
 // CHECK-NEXT:       "context-hash": "{{.*}}",
 // CHECK-NEXT:       "file-deps": [
 // CHECK-NEXT:         "[[PREFIX]]/first/module.modulemap",
+// CHECK-NEXT:         "[[PREFIX]]/second/module.modulemap",
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benlangmuir wrote:

Why did this change?

https://github.com/llvm/llvm-project/pull/86216