[Chat] Improve gate (#10359)

src/screens/Messages/Conversation.tsx

@@ -1,4 +1,4 @@
-import {useCallback, useEffect, useMemo, useState} from 'react'
+import {useCallback, useEffect, useMemo, useRef, useState} from 'react'
 import {type LayoutChangeEvent, View} from 'react-native'
 import {useSafeAreaInsets} from 'react-native-safe-area-context'
 import {moderateProfile} from '@atproto/api'
@@ -319,7 +319,10 @@ function GroupChatGate() {
     ax.features.GroupChatsHasBeenReleased,
   )
 
+  const isAlreadyGoingBackRef = useRef(false)
   const onGoBack = () => {
+    if (isAlreadyGoingBackRef.current) return
+    isAlreadyGoingBackRef.current = true
     if (navigation.canGoBack()) {
       navigation.goBack()
     } else {
@@ -330,27 +333,29 @@ function GroupChatGate() {
   return (
     <Prompt.Outer
       control={groupChatGateDialogControl}
+      onClose={onGoBack}
       nativeOptions={{preventDismiss: true, preventExpansion: true}}
       testID="groupChatGateDialog">
       <Prompt.Content>
-        <View style={[a.w_full, a.align_center, a.py_2xl]}>
-          <Text style={{fontSize: 48}} emoji>
+        <View style={[a.w_full, a.align_center, a.py_3xl]}>
+          <Text style={{fontSize: 72}} emoji>
             🐴
           </Text>
         </View>
-        <Prompt.TitleText>
+        <Prompt.TitleText style={[a.text_center]}>
           {hasBeenReleased ? (
             <Trans>Group chats are now available</Trans>
           ) : (
             <Trans>Group chats are not yet available</Trans>
           )}
         </Prompt.TitleText>
-        <Prompt.DescriptionText>
+        <Prompt.DescriptionText style={[a.text_center]}>
           {hasBeenReleased ? (
             <Trans>Update your app to the latest version to join in!</Trans>
           ) : (
             <Trans>
-              This feature isn't available to you yet. Please check back later.
+              Hold your horses! This feature isn't available to you yet. Please
+              check back later.
             </Trans>
           )}
         </Prompt.DescriptionText>