[clang] [clang-format] Introduce "ReflowComments: IndentOnly" to re-indent comments without breaking internal structure (think Doxygen). (PR #96804)

[Owen Pan via cfe-commits]

================
@@ -4704,8 +4704,8 @@ void UnwrappedLineParser::flushComments(bool NewlineBeforeNext) {
     //
     // FIXME: Consider putting separate line comment sections as children to the
     // unwrapped line instead.
-    Tok->ContinuesLineCommentSection =
-        continuesLineCommentSection(*Tok, *Line, CommentPragmasRegex);
+    Tok->ContinuesLineCommentSection = continuesLineCommentSection(
+        *Tok, *Line, Style.ReflowComments, CommentPragmasRegex);
----------------
owenca wrote:

```suggestion
        *Tok, *Line, Style, CommentPragmasRegex);
```

https://github.com/llvm/llvm-project/pull/96804