core, ui: keep loaded support stats on member join, handle failed loads on iOS, write members on main thread

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

@@ -388,6 +388,11 @@ object ChatModel {
     chatsContext.upsertGroupMember(rhId, cInfo.groupInfo, current?.copy(supportChat = member.supportChat) ?: member)
   }
 
+  fun withLoadedSupportChat(member: GroupMember): GroupMember {
+    val supportChat = groupMembersIndexes.value[member.groupMemberId]?.let { groupMembers.value.getOrNull(it) }?.supportChat
+    return if (supportChat != null) member.copy(supportChat = supportChat) else member
+  }
+
   fun populateGroupMembersIndexes() {
     groupMembersIndexes.value = emptyMap()
     val gmIndexes = groupMembersIndexes.value.toMutableMap()
@@ -979,6 +984,7 @@ object ChatModel {
           // stale data, should be cleared at that point, otherwise, duplicated items will be here which will produce crashes in LazyColumn
           groupMembers.value = emptyList()
           groupMembersIndexes.value = emptyMap()
+          membersLoaded.value = false
         }
         val memberIndex = groupMembersIndexes.value[member.groupMemberId]
         val updated = chatItems.value.map {

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

@@ -3162,7 +3162,7 @@ object ChatController {
       is CR.JoinedGroupMemberConnecting ->
         if (active(r.user)) {
           withContext(Dispatchers.Main) {
-            chatModel.chatsContext.upsertGroupMember(rhId, r.groupInfo, r.member)
+            chatModel.chatsContext.upsertGroupMember(rhId, r.groupInfo, chatModel.withLoadedSupportChat(r.member))
           }
         }
       is CR.MemberAcceptedByOther ->
@@ -3273,7 +3273,7 @@ object ChatController {
       is CR.JoinedGroupMember ->
         if (active(r.user)) {
           withContext(Dispatchers.Main) {
-            chatModel.chatsContext.upsertGroupMember(rhId, r.groupInfo, r.member)
+            chatModel.chatsContext.upsertGroupMember(rhId, r.groupInfo, chatModel.withLoadedSupportChat(r.member))
           }
         }
       is CR.ConnectedToGroupMember -> {

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chatlist/ChatListNavLinkView.kt

@@ -265,11 +265,13 @@ suspend fun setGroupMembers(rhId: Long?, groupInfo: GroupInfo, chatModel: ChatMo
       newMember
     }
   }
-  if (chatModel.chatId.value != groupInfo.id && chatModel.creatingChannelId.value != groupInfo.id) return@coroutineScope
-  chatModel.groupMembersIndexes.value = emptyMap()
-  chatModel.groupMembers.value = newMembers
-  chatModel.membersLoaded.value = true
-  chatModel.populateGroupMembersIndexes()
+  withContext(Dispatchers.Main) {
+    if (chatModel.chatId.value != groupInfo.id && chatModel.creatingChannelId.value != groupInfo.id) return@withContext
+    chatModel.groupMembersIndexes.value = emptyMap()
+    chatModel.groupMembers.value = newMembers
+    chatModel.membersLoaded.value = true
+    chatModel.populateGroupMembersIndexes()
+  }
 }
 
 @Composable