Views autocomplete input is too wide on mobile

Problem/Motivation

Autocomplete field inputs lack appropriate styles for smaller screens in Bartik, so they break the layout:

This issue does not occur in Seven or Olivero so I think it's specific to Bartik.

Follow up from 🐛 Views exposed filters with autocomplete are much wider than text filters Needs work

Steps to reproduce

1. Install Drupal
2. Create a view with an autocomplete exposed filter
3. Display the view in Bartik via a page or a block
4. View it on a smaller screen
5. See that the autocomplete field is too wide

Proposed resolution

Add some CSS to handle this field on smaller screens, as with Seven: https://git.drupalcode.org/project/drupal/-/blob/9.2.x/core/themes/seven...

Remaining tasks

• Patch / merge request with CSS update
• Review

User interface changes

N/A

API changes

N/A

Data model changes

N/A

Release notes snippet

N/A