fix: unpin command silently fails when tab is moved between panes

Author: devvaannsh

src/extensionsIntegrated/TabBar/drag-drop.js

@@ -320,6 +320,11 @@ define(function (require, exports, module) {
                 // if the prev file is not pinned, we unpin this file too!
                 if (!MainViewManager.isPathPinned(paneId, prevFilePath)) {
                     const fileObj = FileSystem.getFileForPath(draggedPath);
+
+                    // we consciously enable the unpin command here, because if the tab is pinned,
+                    // the unpin command will be disabled by default as the last context menu item
+                    // and the FILE_UNPIN command will not execute
+                    CommandManager.get(Commands.FILE_UNPIN).setEnabled(true);
                     CommandManager.execute(Commands.FILE_UNPIN, { file: fileObj, paneId: paneId });
                 }
             }