UI: fix blank page when list Other OSes in VNF appliance deployment

[weizhouapache]

Description

This PR fixes #13621

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 17.69%. Comparing base (17e5947) to head (6d5ad2e).
⚠️ Report is 1 commits behind head on 4.22.

Additional details and impacted files

@@             Coverage Diff              @@
##               4.22   #13620      +/-   ##
============================================
- Coverage     17.69%   17.69%   -0.01%     
- Complexity    15829    15832       +3     
============================================
  Files          5925     5925              
  Lines        533534   533534              
  Branches      65267    65273       +6     
============================================
- Hits          94412    94398      -14     
- Misses       428444   428457      +13     
- Partials      10678    10679       +1     

Flag	Coverage Δ
uitests	3.69% <ø> (ø)
unittests	18.77% <ø> (-0.01%)	⬇️

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