[FixBug][Jsonsplit] When to save process definition, upload task code field #4417 (#5178)

* fix: task page, rename "description" to "desc"

* fix: The default value of field dependence is null.

* fix: frontend compile check

* fix: When create process, the version button is set to unavailable

* fix: sql condition bug

* fix: When to save process definition, upload task code field
Co-authored-by: Nwen-hemin <wenhemin@apache.com>

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

@@ -693,6 +693,7 @@
       }
       // Non-null objects represent backfill
       if (!_.isEmpty(o)) {
+        this.code = o.code
         this.name = o.name
         this.taskInstancePriority = o.taskInstancePriority
         this.runFlag = o.runFlag || 'NORMAL'
@@ -766,6 +767,7 @@
         return {
           type: this.nodeData.taskType,
           id: this.nodeData.id,
+          code: this.code,
           name: this.name,
           desc: this.desc,
           runFlag: this.runFlag,