[7.x] [Discover][Visualize] Fix visualizing a selected field in discover search (#61226)#61406

sulemanof merged 2 commits intoelastic:7.xelastic/kibana:7.xfrom

sulemanof:backport/7.x/pr-61226sulemanof/kibana:backport/7.x/pr-61226Copy head branch name to clipboard