[frontend] Fixing default value of payload argument not set up

[Dimfacion]

Proposed changes

• Fixing default value of payload argument not set up when the inject content block is not open

Related issues

• Closes Default value of payload argument is not taken into account when creating an atomic testing #1666

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 33.08%. Comparing base (946652b) to head (c0cb303).
Report is 5 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1675      +/-   ##
============================================
- Coverage     33.15%   33.08%   -0.07%     
- Complexity     1586     1617      +31     
============================================
  Files           551      558       +7     
  Lines         14430    14682     +252     
  Branches        873      898      +25     
============================================
+ Hits           4784     4858      +74     
- Misses         9425     9604     +179     
+ Partials        221      220       -1     

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