feat: 扩展用户管理统一搜索范围

- 支持按账号、昵称、电话、邮件和角色名搜索

- 补充搜索提示、特殊字符处理及前后端测试

easyflow-ui-admin/app/src/locales/langs/en-US/sysAccount.json

@@ -3,6 +3,7 @@
   "deptId": "Dept",
   "tenantId": "TenantId",
   "loginName": "LoginName",
+  "searchPlaceholder": "Search account, nickname, phone, email, or role",
   "password": "Password",
   "accountType": "AccountType",
   "nickname": "Nickname",

easyflow-ui-admin/app/src/locales/langs/zh-CN/sysAccount.json

@@ -3,6 +3,7 @@
   "deptId": "部门",
   "tenantId": "租户ID",
   "loginName": "登录账号",
+  "searchPlaceholder": "搜索账号、昵称、电话、邮件或角色",
   "password": "密码",
   "accountType": "账户类型",
   "nickname": "昵称",