Fix drag and drop in LayerTree

[LukasLohoff]

Description

This removes onDragStart from the layer tree title node.

Please note that if you want to use a draggable component inside the layer tree title node via nodeTitleRenderer, you will have to stop drag events on that node yourself. This can be done by applying the properties to the child node.

Example change:

terrestris/shogun-gis-client#1777

@terrestris/devs Please review

Related issues or pull requests

Source PR: #3894

Pull request type

• Bugfix
• Feature
• Dependency updates
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe)

Do you introduce a breaking change?

• Yes
• No

Checklist

• I understand and agree that the changes in this PR will be licensed under the
  BSD-2-Clause.
• I have followed the guidelines for contributing.
• The proposed change fits to the content of the Code of Conduct.
• I have added or updated tests and documentation, and the test suite passes (run npm run check locally).
• I have added a screenshot/screencast to illustrate the visual output of my update.

[FritzHoing]

Can we add a information in the documentary that a onDragStart is needed when implemented to prevent the dragging of the div?

[LukasLohoff]

Can we add a information in the documentary that a onDragStart is needed when implemented to prevent the dragging of the div?

Good idea, added in 4fdca98

[dnlkoch]

🎉 This PR is included in version 26.2.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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