Fix user menu dropdown in chrome && safari when user name is short

[PiyushChandra17]

Fixes #2678

Changes:

• Added floating-ui to ensure all modals fit fully within the screen
• Added browser specific code to detect safari browser (used conditional rendering accordingly)
• Played around in safari browser and seems like overflow: hidden works here:
  

  p5.js-web-editor/client/styles/base/_base.scss

  Lines 8 to 10 in 7e08278

  	body {
  	font-size: #{$base-font-size}px;
  	}

Chome:

chrome.mov

Safari:

safari.mov

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

[raclim]

Thanks for your work on this!

After giving it some thought I think we might want to try to find a workaround for this that doesn't involve adding another dependency if possible, so I'm going to close this for now!