first pass - whitelist bundle ID of slack to prevent premature link click

Author: Sarkar

Branch-SDK/Branch-SDK/BranchActivityItemProvider.m

@@ -70,7 +70,7 @@ - (id)item {
     }
 
     // Because Facebook immediately scrapes URLs, we add an additional parameter to the existing list, telling the backend to ignore the first click
-    if ([channel isEqualToString:@"facebook"] || [channel isEqualToString:@"twitter"]) {
+    if ([channel isEqualToString:@"facebook"] || [channel isEqualToString:@"twitter"]  || [channel isEqualToString:@"com.tinyspeck.chatlyio.share"]) {
         return [NSURL URLWithString:[[Branch getInstance] getShortURLWithParams:params andTags:tags andChannel:channel andFeature:feature andStage:stage andAlias:alias ignoreUAString:self.userAgentString forceLinkCreation:YES]];
     }