fix bug, add the cache logic in getInstancedetail. (#1814)

dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/formModel/formModel.vue

@@ -513,7 +513,8 @@
             this.workerGroupId = o.workerGroupId
           }
 
-        this.params = o.params || {};
+        this.params = o.params || {}
+        this.dependence = o.dependence || {}
 
       }
       this.isContentBox = true

dolphinscheduler-ui/src/js/conf/home/store/dag/actions.js

@@ -147,6 +147,11 @@ export default {
         let processInstanceJson = JSON.parse(res.data.processInstanceJson)
         // tasks info
         state.tasks = processInstanceJson.tasks
+        // tasks cache
+        state.cacheTasks = {}
+        processInstanceJson.tasks.forEach(v => {
+          state.cacheTasks[v.id] = v
+        })
         // global params
         state.globalParams = processInstanceJson.globalParams
         // timeout