Add "Select All" Option to Multi Select Tree

Hello PA-Team!

It would be highly beneficial to add a "Select All" option to the Multi Select Tree slicer, similar to the functionality already available in the Multi Select Drop Down slicer. This feature would allow users to quickly select or deselect all items in the tree with a single action, significantly improving user experience, especially when working with large datasets or deep hierarchies.

Why this is needed
Currently, selecting all items in a Multi Select Tree requires manually expanding the tree and selecting each node. This can be time-consuming and cumbersome, particularly when the tree structure is extensive. A "Select All" option would streamline this process and provide consistency with the behavior of the Multi Select Drop Down.

Proposed Solution

• Add a "All" checkbox at the top of the Multi Select Tree slicer.

Using the context menu for advanced selections is helpful for specific cases, but it doesn’t address the need for a universal "Select All" option for the entire Multi Select Tree. The goal is to have a simple, user-friendly way to select or deselect all items in the tree (including nested elements) with one click.

This functionality would be particularly useful when working with large datasets or deeply nested trees, as manually expanding and selecting items or using advanced context menu options can be time-consuming and less intuitive.

Would it be possible to consider adding this feature for a smoother user experience? Thanks!