Update data model selection in component config

[lassopicasso]

Description

This PR introduces support for two formats of data model binding in config:

1. Old Format: The data model binding is a string, allowing only the selection of the data model field.
2. New Format: The data model binding is an object with properties dataType and field.

For now, the new format is behind a feature flag, multipleDataModelsPerTask. Once this flag is removed, changes to data model bindings will always be saved in the new format.

With the feature flag enabled, users can select both the data model and the specific property of the data model bindings in the configuration of the selected component.

Additionally, validation has been added to handle cases where a data model or a data model field binding no longer exists. In both cases, the data model field will fall back to a dummy option with an empty string. If the data model itself no longer exists, it will fall back to the default data model.

Refactoring

• Split up the tests for editDataModelBindings to align the tests closer to the actual files being tested.
• Restructured the code related to the parent editDataModelBinding.

Additional

Added/updated unit tests and playwright tests

Note

A new file, SelectDataFieldBinding.tsx, has been created for logic related to data field binding. This decision was made because the existing SelectDataFieldComponent file was difficult to work with due to its linkage to deprecated "rule for calculations" code. The existing file is expected to be removed in issue #13027 or later on.

Related Issue(s)

• Frontend: Implement updated data model selection design (begind feature flag) #12738
• Implement validation on dataModelBindings that checks if the selected field actually exists #12740

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)

[standeren]

Amazing work here 🥳
Just som small things for you to consider, and also a small css fix;
Some spacing between the buttons are missing 🙈

[standeren]

Great work 🎉