Allow forwarded ports view to move

Fixes microsoft/vscode-remote-release#3675

src/vs/workbench/contrib/remote/browser/tunnelView.ts

@@ -674,6 +674,7 @@ export class TunnelPanelDescriptor implements IViewDescriptor {
 	readonly workspace = true;
 	readonly group = 'details@0';
 	readonly remoteAuthority?: string | string[];
+	readonly canMoveView = true;
 
 	constructor(viewModel: ITunnelViewModel, environmentService: IWorkbenchEnvironmentService) {
 		this.ctorDescriptor = new SyncDescriptor(TunnelPanel, [viewModel]);