Fix output selector going under cell drag handle

Fix #104579

src/vs/workbench/contrib/notebook/browser/media/notebook.css

@@ -140,6 +140,7 @@
 	transform: translate3d(0px, 0px, 0px);
 	cursor: auto;
 	box-sizing: border-box;
+	z-index: 27; /* Over drag handle */
 }
 
 .monaco-workbench .notebookOverlay .output p {
@@ -179,7 +180,6 @@
 	height: 16px;
 	cursor: pointer;
 	padding: 4px;
-	z-index: 27;
 }
 
 .monaco-workbench .notebookOverlay .output .error_message {
@@ -238,6 +238,7 @@
 	position: relative;
 	left: -23px;
 	cursor: pointer;
+	z-index: 27; /* Over drag handle */
 }
 
 .monaco-workbench .notebookOverlay > .cell-list-container > .monaco-list > .monaco-scrollable-element > .monaco-list-rows > .monaco-list-row.collapsed .notebook-folding-indicator,