Show remove buttons when they have focus.

[MatthijsMud]

Description

Show the "remove image"-button when it has keyboard focus.

• Fixes Remove button not visible despite having keyboard focus #190

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested

1. Run yarn docs:dev.
2. Open the link listed in the console (localhost:6060).
3. Upload a file in one of the dropzones.
4. Press tab on the keyboard.

Test Configuration:

• Browser: FireFox 76.0

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[panz3r]

Hi @MatthijsMud ,

Thanks for your support, LGTM 👍 .

Can you please update your commit message to comply with Gitmoji commit convention?
Thanks again.

[MatthijsMud]

Changed the commit message to include the 🐛 emoji.