Fix group profile whitelist check.

// FREEBIE

Signal/src/Profiles/OWSProfileManager.m

@@ -775,7 +775,7 @@ const NSUInteger kOWSProfileManager_MaxAvatarDiameter = 640;
             NSString *groupIdKey = [groupId hexadecimalString];
 
             // We just consult the lazy cache, not the db.
-            if (self.groupProfileWhitelistCache[groupIdKey]) {
+            if ([self isGroupIdInProfileWhitelist:groupId]) {
                 return;
             }
 

Signal/src/ViewControllers/ConversationView/MessagesViewController.m

@@ -383,6 +383,7 @@ typedef NS_ENUM(NSInteger, MessagesRangeSizeMode) {
         TSGroupThread *groupThread = (TSGroupThread *)self.thread;
         if ([groupThread.groupModel.groupId isEqualToData:groupId]) {
             [self ensureDynamicInteractions];
+            [self ensureBannerState];
         }
     }
 }
@@ -825,6 +826,7 @@ typedef NS_ENUM(NSInteger, MessagesRangeSizeMode) {
                       @"Text for banner in group conversation view that offers to share your profile with this group.")
                         bannerColor:[UIColor ows_reminderDarkYellowColor]
                         tapSelector:@selector(groupProfileWhitelistBannerWasTapped:)];
+        return;
     }
 }