Resolve crash that occurs when a connection to Keycloak fails

[allan-on]

IMPORTANT: Where possible all PRs must be linked to a Github issue

Fixes #3821

Engineer Checklist

• I have written Unit tests for any new feature(s) and edge cases for bug fixes
• I have added any strings visible on UI components to the strings.xml file
• I have updated the CHANGELOG.md file for any notable changes to the codebase
• I have run ./gradlew spotlessApply and ./gradlew spotlessCheck to check my code follows the project's style guide
• I have built and run the FHIRCore app to verify my change fixes the issue and/or does not break the app
• I have checked that this PR does NOT introduce breaking changes that require an update to Content and/or Configs? If it does add a sample here or a link to exactly what changes need to be made to the content.

Code Reviewer Checklist

• I have verified Unit tests have been written for any new feature(s) and edge cases
• I have verified any strings visible on UI components are in the strings.xml file
• I have verifed the CHANGELOG.md file has any notable changes to the codebase
• I have verified the solution has been implemented in a configurable and generic way for reuseable components
• I have built and run the FHIRCore app to verify the change fixes the issue and/or does not break the app

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 24.6%. Comparing base (aaebbb6) to head (d8a9a17).
⚠️ Report is 8 commits behind head on main.

❌ Your project check has failed because the head coverage (24.6%) is below the target coverage (25.0%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff            @@
##              main   #3822     +/-   ##
=========================================
- Coverage     25.0%   24.6%   -0.4%     
- Complexity     844     849      +5     
=========================================
  Files          297     305      +8     
  Lines        16102   16516    +414     
  Branches      2689    2747     +58     
=========================================
+ Hits          4038    4076     +38     
- Misses       11580   11956    +376     
  Partials       484     484             

Flag	Coverage Δ
engine	60.7% <100.0%> (-0.3%)	⬇️
geowidget	21.7% <ø> (+3.1%)	⬆️
quest	4.6% <ø> (+<0.1%)	⬆️

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Files with missing lines	Coverage Δ
...re/engine/data/remote/shared/TokenAuthenticator.kt	74.8% <100.0%> (+0.3%)	⬆️

... and 7 files with indirect coverage changes

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[ellykits]

Instead of omitting all these, you can retain them and add.

catch (e: Exception) {
  Result.failure(e)
}

At the end, to catch any missed exceptions.