[frontend] Fix uri definition variables

[savacano28]

Proposed changes

• Fix url for Manage custom variables on scenario, exercise, quick inject and atomic testing
• On atomic testing page : Currently, we dont have the option for custom variables :
  
• On scenario, exercise, we redirect to /definition for Manage the custom variables :
  

Related issues

• Closes [ UI improvement ] to display uri of a media pressure in an email inject #1473

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

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 33.22%. Comparing base (7e2ac6c) to head (4997d53).
Report is 7 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1651      +/-   ##
============================================
+ Coverage     32.91%   33.22%   +0.30%     
- Complexity     1573     1586      +13     
============================================
  Files           550      551       +1     
  Lines         14426    14451      +25     
  Branches        873      873              
============================================
+ Hits           4749     4802      +53     
+ Misses         9456     9428      -28     
  Partials        221      221              

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wait for last part of fix

[MarineLeM]

There is a problem to display the 'teams' variable