fix(test): 为 ChannelAccountEventControllerTest 添加 @Transactional，防止测试 SQL 清空开发库渠道账号数据

backend/mci-server/src/test/java/com/sino/mci/channel/controller/ChannelAccountEventControllerTest.java

@@ -12,6 +12,7 @@ import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.http.MediaType;
 import org.springframework.test.context.jdbc.Sql;
 import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.Map;
 
@@ -22,6 +23,7 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
 
 @SpringBootTest
 @AutoConfigureMockMvc
+@Transactional
 @Sql(scripts = "/sql/test-channel-account.sql", executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD)
 class ChannelAccountEventControllerTest {