fix: change lambda styles function in x-tabs to class method

modules/chemistry/elements/components/x-tabs.ts

@@ -48,11 +48,13 @@ import './x-icon';
  */
 @customElement('x-tabs')
 export class XTabs extends ChemistryLitElement {
-  override styles = () => [
-    {
-      ':host': { position: 'relative', overflowX: 'auto', maxWidth: '100%' },
-    },
-  ];
+  override styles() {
+    return [
+      {
+        ':host': { position: 'relative', overflowX: 'auto', maxWidth: '100%' },
+      },
+    ];
+  }
 
   @state() _size = new ComponentSizeController(this, { debounceTime: 200 });