android: go back to chat list after closing support chat when invitee is pending (#5918)

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt

@@ -323,6 +323,12 @@ object ChatModel {
         is SecondaryContextFilter.MsgContentTagContext -> null
       }
 
+    val isUserSupportChat: Boolean =
+      when (groupScopeInfo) {
+        null -> false
+        is GroupChatScopeInfo.MemberSupport -> groupScopeInfo.groupMember_ == null
+      }
+
     suspend fun addChat(chat: Chat) {
       chats.add(index = 0, chat)
       popChatCollector.throttlePopChat(chat.remoteHostId, chat.id, currentPosition = 0)

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/group/MemberSupportChatView.kt

@@ -22,6 +22,7 @@ import dev.icerock.moko.resources.compose.stringResource
 
 @Composable
 private fun MemberSupportChatView(
+  chatInfo: ChatInfo,
   memberSupportChatsCtx: ChatModel.ChatsContext,
   staleChatId: State<String?>,
   scrollToItemId: MutableState<Long?>
@@ -29,6 +30,21 @@ private fun MemberSupportChatView(
   KeyChangeEffect(chatModel.chatId.value) {
     ModalManager.end.closeModals()
   }
+  if (appPlatform.isAndroid) {
+    DisposableEffect(Unit) {
+      onDispose {
+        val chat = chatModel.chats.value.firstOrNull { ch -> ch.id == chatInfo.id }
+        if (
+          memberSupportChatsCtx.isUserSupportChat
+          && chat?.chatInfo?.groupInfo_?.membership?.memberPending == true
+        ) {
+          withBGApi {
+            chatModel.chatId.value = null
+          }
+        }
+      }
+    }
+  }
   ChatView(memberSupportChatsCtx, staleChatId, scrollToItemId, onComposed = {})
 }
 
@@ -118,7 +134,7 @@ suspend fun showMemberSupportChatView(staleChatId: State<String?>, scrollToItemI
   ModalManager.end.showCustomModal(true, id = ModalViewId.SECONDARY_CHAT) { close ->
     ModalView({}, showAppBar = false) {
       if (chatInfo is ChatInfo.Group && chatInfo.groupChatScope != null) {
-        MemberSupportChatView(memberSupportChatsCtx, staleChatId, scrollToItemId)
+        MemberSupportChatView(chatInfo, memberSupportChatsCtx, staleChatId, scrollToItemId)
       } else {
         LaunchedEffect(Unit) {
           close()