Fix restart quiz redirects to the course complete page if the course was completed

[m1r0]

Resolves #7212

Proposed Changes

Fix a bug that causes the reset quiz button to redirect to the course complete page if the course was completed. This was happening because the course progress was in the wrong state after a reset.

Testing Instructions

1. Create a course with lessons.
2. Create a quiz with the "Allow Retakes" setting enabled.
3. Complete the course.
4. Return to the quiz and click on "Restart Quiz".
5. You should be redirected to the back to the quiz.

Pre-Merge Checklist

• PR title and description contain sufficient detail and accurately describe the changes
• Acceptance criteria is met
• Decisions are publicly documented
• Adheres to coding standards (PHP, JavaScript, CSS, HTML)
• All strings are translatable (without concatenation, handles plurals)
• Follows our naming conventions (P6rkRX-4oA-p2)
• Hooks (p6rkRX-1uS-p2) and functions are documented
• New UIs are responsive and use a mobile-first approach
• New UIs match the designs
• Different user privileges (admin, teacher, subscriber) are tested as appropriate
• Code is tested on the minimum supported PHP and WordPress versions
• User interface changes have been tested on the latest versions of Chrome, Firefox and Safari
• "Needs Documentation" label is added if this change requires updates to documentation
• Known issues are created as new GitHub issues

[codecov]

Codecov Report

Merging #7377 (645ceb9) into trunk (8f61415) will increase coverage by 0.00%.
Report is 12 commits behind head on trunk.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              trunk    #7377   +/-   ##
=========================================
  Coverage     50.74%   50.75%           
+ Complexity    11148    11147    -1     
=========================================
  Files           613      613           
  Lines         47060    47053    -7     
  Branches        404      404           
=========================================
- Hits          23881    23880    -1     
+ Misses        22852    22846    -6     
  Partials        327      327           

Files	Coverage Δ
assets/admin/editor-wizard/patterns-list.js	26.66% <ø> (ø)
includes/class-sensei-quiz.php	69.63% <100.00%> (+0.17%)	⬆️
includes/class-sensei-utils.php	52.70% <100.00%> (-0.24%)	⬇️

... and 1 file with indirect coverage changes

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