fix: typeahead sort and styling

[KristinAoki]

The styles added to the video upload page was forcing all the form controls to be a fixed size and their trailing elements to render outside of the form control. Now the added styling only applies to the video upload page, as was originally intended. This PR also changes the sort method for the typeahead dropdown. The previous sort method was an in-place sorter so half of the time it would throw an error and not render the list of options.

Testing

1. Navigate to the studio home page.
2. Click "New course".
3. All input boxes should span the width of the main body.
4. Click the expand option for in the organization input.
5. Should render list of options with no errors.
6. Begin typing in the input
7. Should update rendered list with no errors

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (eb320ab) 90.52% compared to head (86b50e1) 90.53%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #396   +/-   ##
=======================================
  Coverage   90.52%   90.53%           
=======================================
  Files         230      230           
  Lines        4139     4140    +1     
  Branches      839      839           
=======================================
+ Hits         3747     3748    +1     
  Misses        371      371           
  Partials       21       21           

Files	Coverage Δ
...ors/containers/VideoUploadEditor/VideoUploader.jsx	94.73% <ø> (ø)
...itors/sharedComponents/TypeaheadDropdown/index.jsx	88.37% <100.00%> (+0.13%)	⬆️

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