Mark pods with restartable init containers as UnschedulableAndUnresolvable

This marks the pods with restartable init containers as
`UnschedulableAndUnresolvable` if the feature gate is disabled to avoid
the inconsistency in resource calculation between the scheduler and the
older kubelet.

pkg/scheduler/framework/plugins/feature/feature.go

@@ -29,4 +29,5 @@ type Features struct {
 	EnablePodSchedulingReadiness                 bool
 	EnablePodDisruptionConditions                bool
 	EnableInPlacePodVerticalScaling              bool
+	EnableSidecarContainers                      bool
 }