src/vs/editor/contrib/dnd/browser/dnd.ts/DragAndDropController/_onEditorMouseDropCanceled
class DragAndDropController:	private _onEditorMouseDropCanceled() {
		this._editor.updateOptions({
			mouseStyle: 'text'
		});

		this._removeDecoration();
		this._dragSelection = null;
		this._mouseDown = false;
	}