To be synchronized list removes content that is checked when part of dependency

[nchieffo]

Describe the bug
When a content is part of the dependency of another content, and both are selected in the left panel, when deselecting the containing item it will remove also the other item

To Reproduce
Steps to reproduce the behavior:

1. create teaser A
2. create page B
3. add B inside teaser targets of content A
4. select content A for content sync
5. notice that also content B is coming, as part of references
6. select also content B from the left panel
7. notice that the right panel is NOT updated
8. deselect content A
9. notice that content B is also removed from the right panel, but it is still selected in the left panel

Expected behavior
Content B should be promoted as no more part of references from A, but as a "chosen" content to be synchronized
Content B should not be removed when removing A

Screenshots

[cmfgi]

will have a look

[nchieffo]

Hello @cmfgi, did you have a chance to check this problem?

[cmfgi]

will check