fix: Fix auto-collapse for popup items on select channel (#1075)

Author: tangcent

idea-plugin/src/main/kotlin/com/itangcent/idea/plugin/dialog/SuvApiExportDialog.kt

@@ -25,7 +25,9 @@ private class SuvApiExportPanel : BorderLayoutPanel() {
         minimumSize = Dimension(100, 30)
     }
     val selectAllCheckBox = JBCheckBox()
-    val channelComboBox = ComboBox<Any?>()
+    val channelComboBox = ComboBox<Any?>().apply {
+        isSwingPopup = false
+    }
     val buttonOK = JButton("✔").apply {
         preferredSize = Dimension(40, 30)
         minimumSize = Dimension(40, 30)