feat: replace progress bar with loading spinner

[KristinAoki]

Description

This change removes the progress bar from the video upload modal and replaces it with text and a spinner. The progress bar was unable to be updated based on the progress of the AWS api connection and would always remain empty even when competed. To prevent user confusion a spinner and text changes are now used to indicate upload progress.

Before

After

Supporting information

JIRA Ticket: TNL-11671 🔒

Testing instructions

1. Navigate to the videos page
2. Click "Add Videos"
3. Select multiple videos
4. Check that the videos go through the following stages
   i. Queued
   ii. Uploading
   iii. Failed or Check icon

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.89%. Comparing base (3a14141) to head (1465b93).
Report is 9 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1192      +/-   ##
==========================================
+ Coverage   92.68%   92.89%   +0.20%     
==========================================
  Files         693      750      +57     
  Lines       12346    13477    +1131     
  Branches     2661     2933     +272     
==========================================
+ Hits        11443    12519    +1076     
- Misses        872      922      +50     
- Partials       31       36       +5     

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[bszabo]

Nice and clean!