Update src/dialogs/more-info/ha-more-info-dialog.ts

Co-authored-by: Wendelin <[email protected]>

Author: timmo001

src/dialogs/more-info/ha-more-info-dialog.ts

@@ -108,7 +108,7 @@ export class MoreInfoDialog extends ScrollableFadeMixin(LitElement) {
 
   @state() private _parentEntityIds: string[] = [];
 
-  @query(".content") private _contentElement!: HTMLDivElement;
+  @query(".content") private _contentElement?: HTMLDivElement;
 
   @state() private _entityId?: string | null;