[vmware] datastore cluster sync with empty child set

[DaanHoogland]

Description

This PR...

Fixes: #13885

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?

[Copilot]

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[DaanHoogland]

@midhunpjos @harikrishna-patnala , can you have a look? Is this worth persuing?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 3.41%. Comparing base (1cd2491) to head (3af2f3d).

❗ There is a different number of reports uploaded between BASE (1cd2491) and HEAD (3af2f3d). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (1cd2491)	HEAD (3af2f3d)
unittests	1	0

Additional details and impacted files

@@              Coverage Diff              @@
##               main   #13886       +/-   ##
=============================================
- Coverage     19.65%    3.41%   -16.25%     
=============================================
  Files          6368      487     -5881     
  Lines        574889    41867   -533022     
  Branches      70353     7912    -62441     
=============================================
- Hits         112985     1429   -111556     
+ Misses       449634    40238   -409396     
+ Partials      12270      200    -12070     

Flag	Coverage Δ
uitests	3.41% <ø> (ø)
unittests	?

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