fix(ui): help preview tabindex, auto focus and buttons (#2616)

components/help/HelpPreview.vue

@@ -2,12 +2,14 @@
 const emit = defineEmits<{
   (event: 'close'): void
 }>()
+
+const vAutoFocus = (el: HTMLElement) => el.focus()
 </script>
 
 <template>
   <div my-8 px-3 sm:px-8 md:max-w-200 flex="~ col gap-4" relative>
-    <button btn-action-icon absolute top--8 right-0 m1 aria-label="Close" @click="emit('close')">
-      <div i-ri:close-line />
+    <button v-auto-focus type="button" btn-action-icon absolute top--8 right-0 m1 aria-label="Close" @click="emit('close')">
+      <span i-ri:close-line />
     </button>
 
     <img :alt="$t('app_logo')" :src="`/${''}logo.svg`" w-20 h-20 height="80" width="80" mxa class="rtl-flip">
@@ -42,7 +44,7 @@ const emit = defineEmits<{
       </NuxtLink>
     </p>
 
-    <button btn-solid mxa tabindex="2" @click="emit('close')">
+    <button type="button" btn-solid mxa @click="emit('close')">
       {{ $t('action.enter_app') }}
     </button>
   </div>