[MISC] Don't block if the snap cannot be installed

[dragomirp]

Issue

If the snap fails to install the charm will attempt to block, but subsequent hooks will error out and there should be no way to automatically recover

Solution

Don't handle the snap installation error so that the install hook can fail and can be retried with juju resolve

Checklist

• I have added or updated any relevant documentation.
• I have cleaned any remaining cloud resources from my accounts.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.57%. Comparing base (8f60854) to head (8a5e0dd).
⚠️ Report is 4 commits behind head on 16/edge.

❌ Your project status has failed because the head coverage (64.57%) is below the target coverage (70.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           16/edge    #1135      +/-   ##
===========================================
- Coverage    64.61%   64.57%   -0.04%     
===========================================
  Files           17       17              
  Lines         4329     4325       -4     
  Branches       667      667              
===========================================
- Hits          2797     2793       -4     
  Misses        1351     1351              
  Partials       181      181              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[marceloneppel]

Thanks!

[taurus-forever]

we should have test(s) for failed snap instannation to make sure juju resolve -all fixes it.