Limit the file tree view container width
Limit the file tree view container width

Closes #34670

jirutka/gitlabhq,dreampet/gitlab,iiet/iiet-git,dreampet/gitlab,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,stoplightio/gitlabhq,dplarson/gitlabhq,mmkassem/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,dplarson/gitlabhq,dreampet/gitlab,iiet/iiet-git,jirutka/gitlabhq,dreampet/gitlab,axilleas/gitlabhq