Prevent search for when under 3 characters

What does this MR do and why?

Follow-up to !100433 (comment 1138668413). For performance reasons the search does not return any results under 3 characters. This MR updates the search input so that it doesn't call the API under 3 characters.

Screenshots or screen recordings

How to set up and validate locally

1. Enable group_overview_tabs_vue feature flag
   • bin/rails console
   • Feature.enable(:group_overview_tabs_vue)
2. Go to a group overview. e.g http://gdk.test:3000/flightjs
3. Search in the first tab

MR acceptance checklist

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