feat: [IOCOM-1821] Tests for actions/reducer/selectors on FIMS' history

[Vangaorth]

Short description

This PR adds tests for actions, reducer and selector on FIMS' history

List of changes proposed in this pull request

On FIMS' history, tests for:

• actions
• reducer
• selectors
• isFimsHistoryExportingSelector internal behaviour changed to use isLoading function instead of checking the instance's kind property

How to test

CI tests should succeed

[pagopa-github-bot]

Affected stories

• 🌟 IOCOM-1821: [App] Test automatici Actions, Reducers e Selectors
  subtask of
  • ⚡ IOCOM-1812: [App] Testing automatico FIMS Storico accessi

Generated by 🚫 dangerJS against e423884

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.10%. Comparing base (4f204b4) to head (e423884).
Report is 673 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6366      +/-   ##
==========================================
- Coverage   48.42%   47.10%   -1.33%     
==========================================
  Files        1488     1818     +330     
  Lines       31617    36943    +5326     
  Branches     7669     8792    +1123     
==========================================
+ Hits        15311    17402    +2091     
- Misses      16238    19484    +3246     
+ Partials       68       57      -11     

Files with missing lines	Coverage Δ
ts/features/fims/history/store/reducer/index.ts	100.00% <100.00%> (ø)
ts/features/fims/history/store/selectors/index.ts	100.00% <100.00%> (ø)

... and 1444 files with indirect coverage changes

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