feat(projects): 服务机构筛选改 IN 精确查询

- BizProject: 加 List<Long> execAdminUserIds (多选 select IN 透传),
  execOrgName 标 @Deprecated (兼容老 API)
- BizProjectMapper: selectList 替换 3 列 OR LIKE (org_name/user_name/nick_name)
  → EXISTS + bpa.exec_user_id IN (精确, 跟 sponsorAdminUserIds 对称)
- BizOrgMapper: selectExecutorOrgOptions 加 LIMIT 5 (跟 sponsor 对齐)

ry-api/ruoyi-business/src/main/resources/mapper/business/BizOrgMapper.xml

@@ -142,6 +142,7 @@
           <if test="userId != null">and o.user_id = #{userId}</if>
           <if test="orgName != null and orgName != ''">and o.org_name like concat('%', #{orgName}, '%')</if>
         order by o.org_id desc
+        LIMIT 5
     </select>
 
     <!--

ry-api/ruoyi-business/src/main/resources/mapper/business/BizProjectMapper.xml

@@ -170,16 +170,14 @@
                     #{id}
                 </foreach>
             </if>
-            <if test="execOrgName != null and execOrgName != ''">
+            <if test="execAdminUserIds != null and execAdminUserIds.size() > 0">
                 and exists (
                     select 1 from biz_project_assign bpa
-                    join biz_org o2 on o2.org_id = bpa.execution_unit_id and o2.org_type = 'executor'
-                    join sys_user su on su.user_id = bpa.exec_user_id
                     where bpa.project_id = project_id
-                      and su.role_type = 'executor'
-                      and (o2.org_name like concat('%', #{execOrgName}, '%')
-                           or su.user_name like concat('%', #{execOrgName}, '%')
-                           or su.nick_name like concat('%', #{execOrgName}, '%'))
+                      and bpa.exec_user_id in
+                    <foreach collection="execAdminUserIds" item="id" open="(" separator="," close=")">
+                        #{id}
+                    </foreach>
                 )
             </if>
             <if test="isFinished != null and isFinished != ''">and is_finished = #{isFinished}</if>