Fix protected field error

The mangler is reporting this error:

WARN: 'setEditorVisible' from lib/vscode/src/vs/workbench/browser/parts/editor/editorPane.ts:160 became PUBLIC because of: lib/vscode/src/vs/workbench/contrib/chat/browser/chatDebug/chatDebugEditor.ts:304
ERROR: Protected fields have been made PUBLIC. This hurts minification and is therefore not allowed. Review the WARN messages further above

No idea how VS Code is dealing with this in their own builds.

Index: code-server/lib/vscode/src/vs/workbench/contrib/chat/browser/chatDebug/chatDebugEditor.ts
===================================================================
--- code-server.orig/lib/vscode/src/vs/workbench/contrib/chat/browser/chatDebug/chatDebugEditor.ts
+++ code-server/lib/vscode/src/vs/workbench/contrib/chat/browser/chatDebug/chatDebugEditor.ts
@@ -301,7 +301,7 @@ export class ChatDebugEditor extends Edi
 		}
 	}
 
-	override setEditorVisible(visible: boolean): void {
+	protected override setEditorVisible(visible: boolean): void {
 		super.setEditorVisible(visible);
 		if (visible) {
 			this.telemetryService.publicLog2<{}, ChatDebugPanelOpenedClassification>('chatDebugPanelOpened');