ci(processor): fix coroutine flow support for message processing

Author: phodal

src/main/kotlin/cc/unitmesh/devti/counit/CustomAgentChatProcessor.kt

@@ -11,6 +11,7 @@ import cc.unitmesh.devti.util.LLMCoroutineScope
 import com.intellij.openapi.components.Service
 import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.project.Project
+import kotlinx.coroutines.flow.collect
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.runBlocking