ui: make events tab selected columns persistent using cache

[shwstppr]

Description

Fixes #10308

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• build/CI
• test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 16.99%. Comparing base (cca8b2f) to head (b6963f5).
⚠️ Report is 46 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main   #11317   +/-   ##
=========================================
  Coverage     16.99%   16.99%           
- Complexity    14715    14719    +4     
=========================================
  Files          5832     5832           
  Lines        517561   517569    +8     
  Branches      62982    62984    +2     
=========================================
+ Hits          87975    87986   +11     
+ Misses       419651   419649    -2     
+ Partials       9935     9934    -1     

Flag	Coverage Δ
uitests	3.82% <ø> (-0.01%)	⬇️
unittests	17.95% <ø> (+<0.01%)	⬆️

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[shwstppr]

@blueorangutan ui

[blueorangutan]

@shwstppr a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/11317 (QA-JID-699)

[DaanHoogland]

clgtm, tested in QA; login set event details on the events tab, logout, login again, same details visible.

[rajujith]

LGTM.
Verified the improvement using the UI on the simulator. Works fine.