F3 - Emoji bubbling on banner-close

[reemhamz]

One-line summary

Adding bubbling emojis on banner-close in the Firefox Families page.

Issue / Bugzilla link

https://github.com/mozilla/bedrock/issues/12111

Checklist

• [ ] User clicks on "Accept all Dad Jokes" button, then emojis should bubble out for a second before the banner fully closes
• [ ] Should not have this effect be seen with prefere-reduced-motion
• [ ] Test accessibility
• [ ] Test it out on mobile

Testing

To test this work:

• [ ] http://localhost:8000/en-US/firefox/family/