Brupop is stuck at RebootedIntoUpdate state

```
NAME STATE VERSION TARGET STATE TARGET VERSION CRASH COUNT
brs-ip-10-21-x-x.ec2.internal Idle 1.20.2 Idle 0
brs-ip-10-21-x-x.ec2.internal StagedAndPerformedUpdate 1.20.2 RebootedIntoUpdate 1.20.3 0

```

Brupop has been stuck at `RebootedIntoUpdate` for a long time, and nothing can be seen in the logs related to this status and error.

Logs -
```
spec: BottlerocketShadowSpec { state: Idle, state_transition_timestamp: None, version: None }, status: Some(BottlerocketShadowStatus { current_version: "1.20.2", target_version: "1.20.3", current_state: Idle, crash_count: 0, state_transition_failure_timestamp: None }) }, state: Idle, shadow_error_info: ShadowErrorInfo { crash_count: 0, state_transition_failure_timestamp: None }
```
Note:- Out of 3 nodes, 1 node was updated successfully, this was the second node.
and we have PDBs. It will not work with PDBs ??

Is this because of this configuration
```Name: xyz
Namespace: dev
Max unavailable: 1
Selector: app.kubernetes.io/instance=xyz-dev,app.kubernetes.io/name=xyz
Status:
Allowed disruptions: 0 <<<<<<
Current: 0
Desired: 2
Total: 3
Events:
```