* Fix overflow in commit graph
Limit commit message to 50% width. This is rather crude but should work
for common use cases with not too-long author names.
Fixes: https://github.com/go-gitea/gitea/issues/17944
* Make it work with dynamic width
* use span
* use explicit none
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
silverwind