fix: changing number of max highlights allowed

[kiram15]

Changing the maximum number of highlights allowed
Associated PRs in openedx/frontend-app-admin-portal#1306 and enterprise-catalog
Jira ticket

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 88.40%. Comparing base (0d978d2) to head (6f554d8).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1185      +/-   ##
==========================================
+ Coverage   88.36%   88.40%   +0.04%     
==========================================
  Files         396      396              
  Lines        8406     8392      -14     
  Branches     2025     2056      +31     
==========================================
- Hits         7428     7419       -9     
+ Misses        936      931       -5     
  Partials       42       42              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[pmakwana93]

lgtm