Bot UI: Enhance UX on mobile

Description

• Pressing enter creates a new line.
• Don’t show footer when input is focused.
• Hide chats list on outside click
• ???

Checklist

• MR description has been reviewed
• MR changes are functionally tested
• MR does NOT have API/CLI changes OR there are API/CLI changes and they have been reviewed & DOCS ARE ADJUSTED (reference doc, etc)
• MR does NOT have UI changes OR there are UI changes and they have been reviewed & UX IS REVIEWED