[clang] [clang] Use a formatted_raw_ostream in TextDiagnostic (PR #164935)

[via cfe-commits]

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@@ -16,10 +16,12 @@
 #define LLVM_CLANG_FRONTEND_TEXTDIAGNOSTIC_H
 
 #include "clang/Frontend/DiagnosticRenderer.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/FormattedStream.h"
 
 namespace clang {
 
+using formatted_raw_ostream = llvm::formatted_raw_ostream;
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Sirraide wrote:

```suggestion
using llvm::formatted_raw_ostream;
```

https://github.com/llvm/llvm-project/pull/164935