refactor(缺陷管理): 修改自定义字段长度

--bug=1049561 --user=宋昌昌 【缺陷管理】JIRA默认模版-创建缺陷报SQL异常 https://www.tapd.cn/55049933/s/1617780

backend/framework/domain/src/main/resources/migration/3.5.0/ddl/V3.5.0_2__ga_ddl.sql

@@ -2,7 +2,7 @@
 SET SESSION innodb_lock_wait_timeout = 7200;
 
 -- 缺陷自定义字段增加文本字段
-ALTER TABLE bug_custom_field ADD COLUMN `content` VARCHAR(1000) COMMENT '字段文本';
+ALTER TABLE bug_custom_field ADD COLUMN `content` longtext COMMENT '字段文本';
 
 
 CREATE TABLE IF NOT EXISTS user_layout(

frontend/src/views/workbench/components/bugTable.vue

@@ -101,6 +101,16 @@
       },
       showInTable: true,
     },
+    {
+      title: 'bugManagement.handleMan',
+      dataIndex: 'handleUser',
+      slotName: 'handleUser',
+      titleSlotName: 'handleUserTitle',
+      showTooltip: true,
+      width: 125,
+      showDrag: true,
+      showInTable: true,
+    },
     {
       title: 'bugManagement.creator',
       dataIndex: 'createUser',
@@ -125,16 +135,6 @@
       },
       showInTable: true,
     },
-    {
-      title: 'bugManagement.handleMan',
-      dataIndex: 'handleUser',
-      slotName: 'handleUser',
-      titleSlotName: 'handleUserTitle',
-      showTooltip: true,
-      width: 125,
-      showDrag: true,
-      showInTable: true,
-    },
     {
       title: 'bugManagement.updateUser',
       dataIndex: 'updateUser',