Fix some more situations when JCEF previews were not shown

Author: ARTI1208

projector-ij-common/src/main/kotlin/org/jetbrains/projector/ij/jcef/ProjectorCefBrowser.kt

@@ -157,8 +157,6 @@ public class ProjectorCefBrowser @JvmOverloads constructor(
       }
 
       override fun ancestorRemoved(event: AncestorEvent?) {
-        instances.remove(id)
-
         sendShowEvent(false)
       }
 
@@ -167,8 +165,6 @@ public class ProjectorCefBrowser @JvmOverloads constructor(
       }
     })
 
-    logger.debug { "createdPrjBrowser: ${cefClient.hashCode()}: ${instances.size} : $originalBrowser" }
-
     loadURL(url)
   }