Fix Session Public Chat profile picture

Signal/src/Loki/Components/ConversationCell.swift

@@ -135,16 +135,21 @@ final class ConversationCell : UITableViewCell {
         LokiAPI.populateUserHexEncodedPublicKeyCacheIfNeeded(for: threadViewModel.threadRecord.uniqueId!) // FIXME: This is a terrible place to do this
         unreadMessagesIndicatorView.alpha = threadViewModel.hasUnreadMessages ? 1 : 0.0001 // Setting the alpha to exactly 0 causes an issue on iOS 12
         if threadViewModel.isGroupThread {
-            let users = LokiAPI.userHexEncodedPublicKeyCache[threadViewModel.threadRecord.uniqueId!] ?? []
-            let randomUsers = users.sorted().prefix(2) // Sort to provide a level of stability
-            if !randomUsers.isEmpty {
-                profilePictureView.hexEncodedPublicKey = randomUsers[0]
-                profilePictureView.additionalHexEncodedPublicKey = randomUsers.count >= 2 ? randomUsers[1] : ""
-            } else {
+            if threadViewModel.name == "Session Public Chat" {
                 profilePictureView.hexEncodedPublicKey = ""
-                profilePictureView.additionalHexEncodedPublicKey = ""
+                profilePictureView.isRSSFeed = true
+            } else {
+                let users = LokiAPI.userHexEncodedPublicKeyCache[threadViewModel.threadRecord.uniqueId!] ?? []
+                let randomUsers = users.sorted().prefix(2) // Sort to provide a level of stability
+                if !randomUsers.isEmpty {
+                    profilePictureView.hexEncodedPublicKey = randomUsers[0]
+                    profilePictureView.additionalHexEncodedPublicKey = randomUsers.count >= 2 ? randomUsers[1] : ""
+                } else {
+                    profilePictureView.hexEncodedPublicKey = ""
+                    profilePictureView.additionalHexEncodedPublicKey = ""
+                }
+                profilePictureView.isRSSFeed = (threadViewModel.threadRecord as? TSGroupThread)?.isRSSFeed ?? false
             }
-            profilePictureView.isRSSFeed = (threadViewModel.threadRecord as? TSGroupThread)?.isRSSFeed ?? false
         } else {
             profilePictureView.hexEncodedPublicKey = threadViewModel.contactIdentifier!
             profilePictureView.additionalHexEncodedPublicKey = nil

Signal/src/ViewControllers/ThreadSettings/OWSConversationSettingsViewController.m

@@ -949,16 +949,8 @@ const CGFloat kIconViewLength = 24;
     [stackView setLayoutMarginsRelativeArrangement:YES];
     
     if (self.isGroupThread) {
-        NSMutableArray<NSString *> *sortedUsers = @[].mutableCopy;
-        NSSet<NSString *> *users = LKAPI.userHexEncodedPublicKeyCache[self.thread.uniqueId];
-        if (users != nil) {
-            for (NSString *user in users) {
-                [sortedUsers addObject:user];
-            }
-        }
-        sortedUsers = [sortedUsers sortedArrayUsingSelector:@selector(compare:)].mutableCopy;
-        profilePictureView.hexEncodedPublicKey = (sortedUsers.count > 0) ? sortedUsers[0] : @"";
-        profilePictureView.isRSSFeed = ((TSGroupThread *)self.thread).isRSSFeed;
+        profilePictureView.hexEncodedPublicKey = @"";
+        profilePictureView.isRSSFeed = true; // For now just always show the Session logo
     } else {
         profilePictureView.hexEncodedPublicKey = self.thread.contactIdentifier;