Use extensions icon for customizations in editor window (#340530)

Use extensions icon for Chat customizations

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/vs/workbench/contrib/chat/browser/actions/chatActions.ts

@@ -1544,13 +1544,12 @@ export function registerChatActions() {
 		}
 	});
 
-	// Show a direct gear action to open the Customizations editor
 	MenuRegistry.appendMenuItem(MenuId.ViewTitle, {
 		command: {
 			id: AICustomizationManagementCommands.OpenEditor,
 			title: localize2('openChatCustomizations', "Open Customizations"),
 			category: CHAT_CATEGORY,
-			icon: Codicon.gear
+			icon: Codicon.extensions
 		},
 		group: 'navigation',
 		when: ContextKeyExpr.and(