[frontend] fix: fixed adding empty filters on datatables

[impolitepanda]

Proposed changes

• Fix or a bug when adding an empty filter in a datatable

Related issues

• No issue created

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug

Further comments

To reproduce the bug before this fix, follow these steps:

• Go to any datatable where filters can be added (example: list of injects for a given scenario)
• Add a new filter (example: type)
• click outside the box, without setting any value

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.10%. Comparing base (fec6ba7) to head (cd857c1).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #2142   +/-   ##
=========================================
  Coverage     35.10%   35.10%           
  Complexity     1418     1418           
=========================================
  Files           535      535           
  Lines         16198    16198           
  Branches       1037     1037           
=========================================
  Hits           5686     5686           
  Misses        10218    10218           
  Partials        294      294           

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