Description

Steps to reproduce:

1. Go to https://www.wikifunctions.org/wiki/Z11
2. Click on "37 languages" in the about widget
3. Focus on the "Search language" bar: the "Cancel" button is made visible
4. Type something in the search bar
5. Exit the language window
6. Open again the language window

Observed behavior:

• ✅ The search field bar is empty (initialized to blank value)
• ✅ The search field bar is focused out
• ❌ The "Cancel" button beside the bar is visible

Expected behavior (Acceptance criteria):

• The "Cancel" button beside the search bar should only be visible when the search bar is active (focused on)
• The behavior should be the same in the Multilingual string dialog

Completion checklist

• Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Front-end_Task/Bug_Completion_Checklist