fix(accordion): remove check for theme flag

Author: OS-susmitabhowmik

core/src/components/accordion/accordion.tsx

@@ -206,15 +206,9 @@ export class Accordion implements ComponentInterface {
       ionItem.lines = 'full';
     }
 
-    /**
-     * Ionic theme: mark header items so `item.ionic.scss` can set pressed tokens.
-     * We cannot use `:host-context(ion-accordion)` for this — that selector is dropped
-     * in WebKit/Firefox (see `mixins.scss` notes on `:host-context`), which breaks
-     * screenshot tests and real Safari.
-     */
-    if (getIonTheme(this) === 'ionic') {
-      ionItem.classList.add('accordion-header-item');
-    }
+
+    ionItem.classList.add('accordion-header-item');
+    
   };
 
   private getSlottedHeaderIonItem = () => {