Sort gallery finder by sortId

SignalServiceKit/src/Storage/OWSMediaGalleryFinder.m

@@ -137,8 +137,7 @@ static NSString *const OWSMediaGalleryFinderExtensionName = @"OWSMediaGalleryFin
             return NSOrderedSame;
         }
         TSMessage *message2 = (TSMessage *)object2;
-        // MJK FIXME - this needs to use sortId
-        return [@(message1.timestampForLegacySorting) compare:@(message2.timestampForLegacySorting)];
+        return [message1 compareForSorting:message2];
     }];
     
     YapDatabaseViewGrouping *grouping = [YapDatabaseViewGrouping withObjectBlock:^NSString * _Nullable(YapDatabaseReadTransaction * _Nonnull transaction, NSString * _Nonnull collection, NSString * _Nonnull key, id  _Nonnull object) {
@@ -164,7 +163,7 @@ static NSString *const OWSMediaGalleryFinderExtensionName = @"OWSMediaGalleryFin
     YapDatabaseViewOptions *options = [YapDatabaseViewOptions new];
     options.allowedCollections = [[YapWhitelistBlacklist alloc] initWithWhitelist:[NSSet setWithObject:TSMessage.collection]];
 
-    return [[YapDatabaseAutoView alloc] initWithGrouping:grouping sorting:sorting versionTag:@"3" options:options];
+    return [[YapDatabaseAutoView alloc] initWithGrouping:grouping sorting:sorting versionTag:@"4" options:options];
 }
 
 + (BOOL)attachmentIdShouldAppearInMediaGallery:(NSString *)attachmentId transaction:(YapDatabaseReadTransaction *)transaction