* Core: Add possibility for task dialogs to associate a view and be able to close when associated view is closed.
* TaskImage: Use task dialog view association.
* Sketcher: Use task dialog view association. Preventing crash (https://github.com/FreeCAD/FreeCAD/issues/16702)
* EditableDatumLabel: Use QPointer to prevent crash
* Add TaskDialog::autoClosedOnDeletedDocument()
* Add option to automatically close task dialog when document is deleted
* Expose autoClosedOnDeletedDocument() to Python
* Expose autoClosedOnTransactionChange() to Python
* Change ControlPy::showDialog() to directly return the task dialog wrapper
* Change TaskView::slotDeletedDocument() to close task dialog if requested
