Blame view - "authored" line leaking into next row
### Summary
In the blame view, when a user’s display name is long, it leaks the "authored" line into the next row.

### Steps to reproduce
Go to https://gitlab.com/gitlab-org/gitlab-vscode-extension/-/blob/main/README.md?ref_type=heads&plain=1&blame=1
#### Tasks
- [x] Fix content to support longer user names and avoid breaking layout
Nice to have:
- [ ] Improve readability of line content in smaller screens
issue