Do not allow text input in dropdown while loading
What does this MR do?
It moves the focus event of the text input of a filterable dropdown to after loading of options is complete. After the fix, the user cannot edit the while it's greyed out and loading.
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
It fixes the bug in https://gitlab.com/gitlab-org/gitlab-ce/issues/23496.
Screenshots (if relevant)
What are the relevant issue numbers?
Fixes #23496 (closed)