TNL-3258 Reset group configuration model when a child content group is deleted (+5 squashed commits)
Squashed commits:
[450761c] found an alternative way to restore model when any of the nested model is deleted
[1b7eb85] passed the context to the inner functions
[c87dafd] refactored the model access using encapsulation instead of directly accessing it
[5d025ff] return the promise
[d8d1f50] fixup! quality (+1 squashed commit)
Squashed commits:
[daa7f81] reset the configuration when the model is deleted (+1 squashed commit)
Squashed commits:
[c7f41f7] reverted: skip test_can_delete_unused_content_group due to flakiness
