[BUG FIX] [MER-4996] Fix auto enroll (#5933)

* add is_enrolled guard

* more safe has_enrollment

* Auto format

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Co-authored-by: darrensiegel <darrensiegel@users.noreply.github.com>

[BUG FIX] [MER-4992] fix right-to-left text in mcq/CATA/ordering choi…

…ce delivery (#5931)

* respect text direction in ordering choices

* style ordering numeric prefix margin in direction-dependent way

* fix rtl handling in mcq/cata choice delivery

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Co-authored-by: Anders Weinstein <andersw@andrew.cmu.edu>

 [BUG FIX] [MER-4956] Captcha Loop if student is invited via email, b…

…ut signs-in with invitation link (#5893)

* In Sections.enroll when the enrollment already exists update the status.
(Default status: enrolled).
This fixes the case when an existing pending enrollment exists, and we
call Sections.enroll for that user, the status should be updated to
:enrolled

* Trigger CI

[BUG FIX] [MER-4886] assessments have ghost grades (#5840)

* fix ghost attempts on assessment scores

* fix exploration attempts from other sections => 'CONTINUE' instead of 'BEGIN' button

[BUG FIX] [MER-4848] Prevent unintended AI settings changes on LiveVi…

…ew reconnection (#5831)

[ENHANCEMENT] [MER-4868] Add LTI keyset caching (#5821)

* add lti keyset caching
update deps to use latest lti library

* fix lti tests

[BUG FIX] [MER-4820] Handle old "submit-and-compare" type question mo…

…dels without catchall (#5767)

Co-authored-by: Anders Weinstein <andersw@andrew.cmu.edu>

[ENHANCEMENT] [MER-4791] LTI external tool deep linking support

[BUG FIX] [MER-4761] One question at a time (with score at the end) (#…

…5718)

* reimplement one at a time question functionality for batch scoring

* do not show submit button for score at the end + one at a time (the submit button is in other place in Figma)

* reimplement all the tests

* address code review comment + remove open_browser

[ENHANCEMENT] [MER-4506] Updates aggregates mode calculation to inclu…

…de all students (#5583)

* updates aggregates to include all students

* fixed test case

* addressed PR review

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Co-authored-by: Raphael Gachuhi <rgachuhi@cmu.edu>