fix: don't hide rows in the grid logic #2082
                
     Merged
            
            
          
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    






This fixes a regression from #321
Seems that with very specific timing, it's possible to end up with a grid that has non-empty
itemsbut no visible rows. The bug was reported as part of a Lit project and I couldn't find a way to reproduce it without using Lit in the test as well.The offending line was added a long time ago and doesn't seem to be relevant anymore. Only the virtualizer should be in charge of hiding/unhiding the body row elements.