[clang-tools-extra] [clang-doc]: Enable horizontal wrapping on longer function definitions (PR #181417)

[Samrudh Nelli via cfe-commits]

SamrudhNelli wrote:

I was thinking of 2), that defaults to 3) for long function names.
Long function names could push the parameters too much to the right, and its better to implement 3) for them.
<img width="1432" height="237" alt="image" src="https://github.com/user-attachments/assets/8448ba2b-a134-4234-8094-4e4ecdd0bdb8" />


https://github.com/llvm/llvm-project/pull/181417