Prevent job log line numbers from being selected
What does this MR do?
This is often annoying as the line number isn't part of the output itself. For diff line numbers, we set user-select: none, and this change does the same for job log line numbers.
Note that there are still spaces at the start of some lines, but those appear to be intentional indents?
Screenshots
Before:
After:
Does this MR meet the acceptance criteria?
Conformity
Closes #35535 (closed).