Fixed #4485 add max-width for attachTo and tooltip (#5493)

* Added tooltip of selectBox and set max width of attach to

* Undo our change, vscode fixed the issue

src/sql/workbench/parts/notebook/notebook.css

@@ -42,6 +42,7 @@
 
 .notebookEditor .labelOnLeftContainer {
 	min-width: 100px;
+	max-width: 250px;
 	margin-right: 20px;
 	font-size: 13px;
 	text-align: center;