Prevent logout while filling in a questionnaire (+ offline redirect fix)

[allan-on]

Brings the "prevent redirecting to the login screen in the middle of filling in a Questionnaire" implementation to main, together with its follow-up bug fix.

Both changes currently live only on custom-engage; this PR cherry-picks them onto a branch off main:

1. Prevent logout when filling questionnaire (cherry-picked from 75eb3468d, by @FikriMilano)
2. If refresh token expired redirect to login if online (cherry-picked from 81240e7d5) — fixes Offline session-expired re-authentication loop after questionnaire submit #3842

[codecov]

Codecov Report

❌ Patch coverage is 19.35484% with 25 lines in your changes missing coverage. Please review.
✅ Project coverage is 24.6%. Comparing base (aaebbb6) to head (ef37900).
⚠️ Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
...register/fhircore/quest/ui/main/AppMainActivity.kt	0.0%	20 Missing ⚠️
...re/quest/ui/questionnaire/QuestionnaireActivity.kt	0.0%	4 Missing ⚠️
...re/engine/data/remote/shared/TokenAuthenticator.kt	85.7%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##              main   #3843     +/-   ##
=========================================
- Coverage     25.0%   24.6%   -0.4%     
- Complexity     844     853      +9     
=========================================
  Files          297     305      +8     
  Lines        16102   16538    +436     
  Branches      2689    2749     +60     
=========================================
+ Hits          4038    4082     +44     
- Misses       11580   11968    +388     
- Partials       484     488      +4     

Flag	Coverage Δ
engine	60.8% <85.7%> (-0.2%)	⬇️
geowidget	21.6% <ø> (+3.0%)	⬆️
quest	4.6% <0.0%> (+<0.1%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...re/engine/data/remote/shared/TokenAuthenticator.kt	78.7% <85.7%> (+4.3%)	⬆️
...re/quest/ui/questionnaire/QuestionnaireActivity.kt	0.6% <0.0%> (-0.1%)	⬇️
...register/fhircore/quest/ui/main/AppMainActivity.kt	3.6% <0.0%> (-0.5%)	⬇️

... and 6 files with indirect coverage changes

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[ellykits]

Thanks for the PR @allan-on, while this temporarily fixes the issue, the underlying reason why this happen is not actually addressed in this PR. What we are doing is suppressing the redirect to the login page, via a class property flag. What would happen when the class is garbage collected? Can we think about resolving this in a different way?