[frontend] Change "Add teams..." dialog into "Modify teams..." and alter behaviour (#2112)

[antoinemzs]

Proposed changes

• "Add teams..." controls in Inject definitions is changed to "Modify teams"
• The Modify teams dialog allows for adding or removing teams to/from inject
• Allowed team list is scoped down to the teams added to a scenario/simulation accordingly
  • If no teams were added to a scenario or simulation, no teams are available to add to injects

Related issues

• Fix Modifying targets in an inject is not working properly #2112

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

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.12%. Comparing base (b6df3e4) to head (111b637).

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #2125   +/-   ##
=========================================
  Coverage     35.12%   35.12%           
  Complexity     1418     1418           
=========================================
  Files           535      535           
  Lines         16189    16189           
  Branches       1037     1037           
=========================================
  Hits           5686     5686           
  Misses        10209    10209           
  Partials        294      294           

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