Only add layout set for data tasks

[standeren]

Description

Only add layout set when adding bpmn elements in the process editor that have taskType 'data'. This is due to the other taskTypes like confirmation and sign have default layouts in the apps in the app-developer does not add a layout set.
So adding and customizing the look of these steps should be optional and triggered by an active choice.

This PR does not include adding the possibility to trigger a creation of a related layoutset in the config panel for elements that are not data-tasks

Related Issue(s)

• #{issue number}

Verification

• Your code builds clean without any errors or warnings
• Manual testing done (required)
• Relevant automated test added (if you find this hard, leave it and we'll help out)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.11%. Comparing base (e07f414) to head (c88677f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #12676   +/-   ##
=======================================
  Coverage   90.11%   90.11%           
=======================================
  Files        1289     1289           
  Lines       18410    18410           
  Branches     2242     2242           
=======================================
  Hits        16590    16590           
  Misses       1561     1561           
  Partials      259      259           

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[ghost]

LGTM 😄