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

[Owen Pan via cfe-commits]

owenca wrote:

@ichaer I forgot to mention that you would need to update `docs/ReleaseNotes.rst`.

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