[ENT-9343] Fix autoplay setting for YouTube videos on course previews

[mahamakifdar19]

Ticket
https://2u-internal.atlassian.net/browse/ENT-9343

Description
Set autoplay to true for YouTube videos on the course about page (restoring previous behavior) and false for videos on the video detail page. This change resolves issues where video previews were breaking on the course about page.

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)
• Ensure English strings are marked for translation. See documentation for more details.

Only if submitting a visual change

• Ensure to attach screenshots
• Ensure to have UX team confirm screenshots

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.05%. Comparing base (8d4a976) to head (0bcfe90).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1148   +/-   ##
=======================================
  Coverage   88.05%   88.05%           
=======================================
  Files         393      393           
  Lines        8268     8268           
  Branches     1984     2026   +42     
=======================================
  Hits         7280     7280           
+ Misses        946      945    -1     
- Partials       42       43    +1     

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