Proposed Changes

• Depends on Sticky list headers properties-panel#397
• Closes Sticky "plus" icon for map and list entries #1103

This change incorporates the behavior implemented in this merge request and enables sticky list headers for the following elements:

• Inputs and Outputs: List and Map values
• Execution listeners: Field injection lists
• Form fields: Constraints, Properties and list-type Values

All these lists have only one nesting level, and as far as I know, there are no cases where deeper nesting is used.

How it will look like

Checklist

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