fix: popover animation flicker

Author: thejackshelton

packages/kit-headless/src/components/popover/popover-panel-impl.tsx

@@ -104,7 +104,6 @@ export const HPopoverPanelImpl = component$((props: PropsOf<'div'>) => {
       {...props}
       id={panelId}
       ref={props.ref}
-      data-open={context.isOpenSig.value ? '' : undefined}
       popover={
         (context.manual && 'manual') || props.popover === 'manual'
           ? 'manual'

packages/kit-headless/src/components/popover/utils.ts

@@ -19,6 +19,7 @@ export async function supportShowAnimation(popover: HTMLElement, isPolyfill: boo
 
   popover.classList.add('popover-showing');
   popover.classList.remove('popover-closing');
+  popover.dataset.open = '';
   popover.removeAttribute('data-closing');
   popover.removeAttribute('data-closed');
 }