fix bug where project overview page display no data (#10720)

dolphinscheduler-ui/src/views/projects/overview/index.tsx

@@ -43,8 +43,9 @@ const workflowMonitor = defineComponent({
     }
 
     const initData = () => {
-      taskStateRef.value = getTaskState(dateRef.value)
-      processStateRef.value = getProcessState(dateRef.value)
+      taskStateRef.value = getTaskState(dateRef.value) || taskStateRef.value
+      processStateRef.value =
+        getProcessState(dateRef.value) || processStateRef.value
     }
 
     onMounted(() => {