src/vs/workbench/contrib/preferences/browser/settingsWidgets.ts/AbstractListSettingWidget/onListDoubleClick
class AbstractListSettingWidget:	private onListDoubleClick(e: MouseEvent): void {
		const targetIdx = this.getClickedItemIndex(e);
		if (targetIdx < 0) {
			return;
		}

		const item = this.model.items[targetIdx];
		if (item) {
			this.editSetting(targetIdx);
			e.preventDefault();
			e.stopPropagation();
		}
	}