fix(日报): "提醒未提交成员"改用组织架构接口凑候选名单，不再必现400

后端问题清单"新增2"记录过：POST /reports/daily/reminders 要求调用方传入完整候选
user_ids 名单（服务端只做"从候选里筛出未交的人再提醒"，不会自己算全公司名单），
但前端一直传空数组，必然命中服务端"user_ids为空"的400校验。

重新核实时发现这条其实不是后端缺口——GET /organization/members 不传 q/department_id
时就会返回调用者可见范围内的全部在职成员（分页），这个接口本来就在会议参会人选择器
里用着，只是"提醒未提交成员"这个按钮没有复用它。改为点击时先分页拉取全部组织成员
user_id，再传给提醒接口；组织架构为空时给出明确提示而不是让请求再次落入400。

已在浏览器验证请求格式（limit=100，与后端实际接受的参数一致）和空组织架构下的
兜底提示；当前测试租户组织架构数据本身为空，未能覆盖"真的有人被提醒"这条路径，
但接口契约已对照 im_be 源码逐字段核实。

src/lib/im-api.js

@@ -767,8 +767,8 @@ export const getOrganizationDepartmentMembers = (departmentId, cursor = '') =>
 // server/im_http_test.go's own request fixtures. This function used to send `query`, silently making
 // every caller's search box a no-op (server ignores the unrecognized param and returns the unfiltered
 // list every time).
-export const getOrganizationMembers = ({query = '', departmentId = '', cursor = ''} = {}) =>
-  imGet('/organization/members' + qs({q: query, department_id: departmentId, cursor}));
+export const getOrganizationMembers = ({query = '', departmentId = '', cursor = '', limit = ''} = {}) =>
+  imGet('/organization/members' + qs({q: query, department_id: departmentId, cursor, limit}));
 export const searchOrganization = (query = '', types = 'department,user', cursor = '') =>
   imGet('/organization/search' + qs({q: query, types, cursor}));
 export const getMeetings = (cursor = '', limit = 20) => imGet('/meetings' + qs({limit, cursor}));