When receiving a hello packet, if the neighbor state transitions directly from a non-ISIS_ADJ_UP state (such as ISIS_ADJ_INITIALIZING) to ISIS_ADJ_DOWN state, the neighbor entry cannot be deleted. If the neighbor is removed or the neighbor's System ID changes, it may result in memory leakage in the neighbor entry.

Add patch for circinus and sagitta from FRR https://github.com/FRRouting/frr/pull/17298
The current is not affected as it used FRR 10.x where it is merged.