[7.x] Added styles to make combobox list items wider for alerting flyout (#61894)#62008

YulNaumenko merged 1 commit intoelastic:7.xelastic/kibana:7.xfrom

YulNaumenko:backport/7.x/pr-61894YulNaumenko/kibana:backport/7.x/pr-61894Copy head branch name to clipboard