使用蓝绿发布，无法确认执行下一步，error: rollouts.rollouts.kruise.io "rollouts-demo" does not allow to approve, because current canary state is not 'StepPaused'

[mosatu]

已经查看到rollout的状态是StepPaused，但是approve的时候提示状态部署不是StepPause

[root@VM-10-25-tencentos ~]# kubectl get rollouts -n canary-test
NAME            STATUS        CANARY_STEP   CANARY_STATE   MESSAGE                                                                         AGE
rollouts-demo   Progressing   1             StepPaused     Rollout is in step(1/3), and you need manually confirm to enter the next step   3m48s
[root@VM-10-25-tencentos ~]# kubectl-kruise rollout approve rollouts/rollouts-demo -n canary-test
error: rollouts.rollouts.kruise.io "rollouts-demo" does not allow to approve, because current canary state is not 'StepPaused'

[AiRanthem]

@mosatu The bug is fixed by this PR