ui: clear selected resource when no items in listview

[shwstppr]

Description

Fixes #11922

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):

createbackup-resource-fix.mp4

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 17.56%. Comparing base (bfc4f60) to head (2ab7188).
⚠️ Report is 172 commits behind head on 4.22.

Additional details and impacted files

@@            Coverage Diff            @@
##               4.22   #11946   +/-   ##
=========================================
  Coverage     17.56%   17.56%           
- Complexity    15540    15541    +1     
=========================================
  Files          5909     5909           
  Lines        529045   529055   +10     
  Branches      64615    64617    +2     
=========================================
+ Hits          92933    92938    +5     
- Misses       425657   425662    +5     
  Partials      10455    10455           

Flag	Coverage Δ
uitests	3.58% <ø> (-0.01%)	⬇️
unittests	18.63% <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/11946 (QA-JID-798)

[harikrishna-patnala]

LGTM. Tested in my environment.

Previously, without selecting any instance in the create backup schedule, it picked the first VM in the list VMs response and moved to showing the schedule config.

After the fix, I see the VM selection first

[abh1sar]

Code LGTM