Fix missing dependency after merge release-3.51.0->develop.next

Author: Flanker32

PluginsAndFeatures/azure-toolkit-for-intellij/src/com/microsoft/azure/toolkit/intellij/springcloud/properties/SpringCloudAppPropertiesEditor.java

@@ -9,6 +9,7 @@
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.JBMenuItem;
 import com.intellij.openapi.ui.JBPopupMenu;
+import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.ui.DocumentAdapter;
 import com.intellij.ui.HideableDecorator;
 import com.intellij.ui.HyperlinkLabel;