skip drift rendering for deposed resources

Deposed instances have no current state and are only scheduled for
deletion, so there is no reason to try and render drift on these
instances.

internal/command/views/plan.go

@@ -374,6 +374,10 @@ func renderChangesDetectedByRefresh(before, after *states.State, schemas *terraf
 			}
 
 			for key, bis := range brs.Instances {
+				if bis.Current == nil {
+					// No current instance to render here
+					continue
+				}
 				var pis *states.ResourceInstance
 				if prs != nil {
 					pis = prs.Instance(key)