fix(editors): only open ms-select drop when exists

[ghiscoding]

• when Row Selection in combo with single click open Editor, it was selecting the row and conflicting with the ms-select open, the issue was caused by a 0ms delay to open the ms-select editor and by the time it was calling open (after delay), the ms-select was in fact already destroyed because of the row selection and that caused a phantom select drop in top left corner that wasn't being removed and became an orphan DOM element (DOM leaking)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.8%. Comparing base (a6dbf2c) to head (235a610).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #1525    +/-   ##
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  Coverage    99.8%   99.8%            
=======================================
  Files         198     198            
  Lines       21616   21616            
  Branches     6949    7219   +270     
=======================================
  Hits        21555   21555            
  Misses         61      61            

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