fix new button and add unit tests for slices

[angle943]

• fix new button
• create unit tests for all slices

[github-actions]

❌ Invalid Changelog Heading

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[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (query_explore@ac67424). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...ation/utils/state_management/slices/ui/ui_slice.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##             query_explore   #10002   +/-   ##
================================================
  Coverage                 ?   60.16%           
================================================
  Files                    ?     4065           
  Lines                    ?   103495           
  Branches                 ?    16428           
================================================
  Hits                     ?    62271           
  Misses                   ?    37093           
  Partials                 ?     4131           

Flag	Coverage Δ
Linux_1	28.00% <ø> (?)
Linux_2	41.63% <ø> (?)
Linux_3	39.31% <ø> (?)
Windows_1	28.01% <ø> (?)
Windows_2	41.61% <ø> (?)
Windows_3	39.31% <ø> (?)
Windows_4	29.50% <85.71%> (?)

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