fix: actual number of replicas in sharding rollout status (#9937)

Author: leon-ape

controllers/apps/rollout/transformer_rollout_replace.go

@@ -471,7 +471,11 @@ func replaceShardingReplicas(rollout *appsv1alpha1.Rollout, sharding appsv1alpha
 	replicas := spec.Template.Replicas
 	for _, status := range rollout.Status.Shardings {
 		if status.Name == sharding.Name {
-			replicas = status.Replicas
+			if spec.Shards == 0 {
+				replicas = 0
+			} else {
+				replicas = status.Replicas / spec.Shards
+			}
 			break
 		}
 	}

controllers/apps/rollout/transformer_rollout_setup.go

@@ -196,7 +196,7 @@ func (t *rolloutSetupTransformer) initShardingStatus(transCtx *rolloutTransformC
 		ShardingDef:    spec.ShardingDef,
 		ServiceVersion: spec.Template.ServiceVersion,
 		CompDef:        spec.Template.ComponentDef,
-		Replicas:       spec.Template.Replicas,
+		Replicas:       spec.Template.Replicas * spec.Shards,
 	})
 	return nil
 }