Adapt Sensei Core to the Sensei Co-Teachers functionality.

[aaronfc]

Changes proposed in this Pull Request

• Replace check for author with check for edit_post capability of the lesson for Quizzes.

Testing instructions

• Create a lesson.
• Confirm you can get a response from the sensei-internal/v1/lesson-quiz/3033?context=edit&_locale=user API (you can open the editor for the lesson and it will do the request for you).
• With another user confirm you get a permission error when accessing the sensei-internal/v1/lesson-quiz/3033?context=edit&_locale=user API.

New hooks

• sensei_filter_module_terms_by_owner: Filter that allows to alter the result of the module terms when being filtered checking for the owner.
• sensei_teacher_meta_box_coteachers_feature: Action that is expected to render the coteachers meta box content.

Screenshot / Video

TBD

[codecov[bot]]

Codecov Report

Merging #5345 (328391d) into trunk (8cad8f9) will decrease coverage by 0.01%. The diff coverage is 67.69%.

@@             Coverage Diff              @@
##              trunk    #5345      +/-   ##
============================================
- Coverage     44.97%   44.96%   -0.02%     
  Complexity     9456     9456              
============================================
  Files           476      476              
  Lines         33482    33491       +9     
  Branches        272      272              
============================================
- Hits          15059    15058       -1     
- Misses        18221    18231      +10     
  Partials        202      202              

Impacted Files	Coverage Δ
includes/admin/class-sensei-learners-main.php	5.04% <0.00%> (ø)
...e-list/class-sensei-course-list-block-patterns.php	0.00% <ø> (ø)
...udes/blocks/class-sensei-block-contact-teacher.php	92.15% <ø> (ø)
includes/blocks/class-sensei-lesson-blocks.php	0.00% <0.00%> (ø)
includes/class-sensei-modules.php	35.59% <0.00%> (ø)
includes/class-sensei-teacher.php	46.02% <0.00%> (-0.77%)	:arrow_down:
includes/hooks/template.php	0.00% <ø> (ø)
includes/class-sensei-utils.php	54.21% <50.00%> (ø)
includes/class-sensei-quiz.php	60.38% <83.33%> (ø)
...udes/blocks/class-sensei-course-overview-block.php	88.88% <88.88%> (ø)
... and 12 more

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[aaronfc]

New branch: add/coteachers-metabox-hook New PR: https://github.com/Automattic/sensei/pull/6115