[MultiSelectTree] Wrong nodes selection when summary tag is used

[mbechev]

Description

Since v14, when using the summary tag and selecting more items, removing the summary tag causes inconsistent behavior by leaving items that were never selected. In v13, using the same MutliSelectTree setup, this behavior is not reproduced.

Steps To Reproduce

1. Select Furniture (all its children are selected making Tables & Chairs visible).
2. Close the popup.
3. Remove the summary tag.
4. Sofa is visible and the only item selected.
   https://stackblitz.com/edit/angular-c3fwai-rsrwqn

What is the case with v13.

1. Select Furniture (all its children are selected making Furniture visible).
2. Close the popup.
3. Remove the summary tag.
4. Furniture remains visible now.
   https://stackblitz.com/edit/angular-c3fwai-cvbwwq

Screenshots or video

v14:

Screen.Recording.2024-11-20.at.16.07.26.mov

v13:

Screen.Recording.2024-11-20.at.16.09.12.mov

Expected Behavior

The MultiSelectTree should not select nodes randomly.

Last working version of the Kendo UI for Angular package (if regression).

v13