fix: bug in multiple jetstream collections

Signed-off-by: Nick Gerakines <[e-mail]>

crates/atproto-jetstream/src/consumer.rs

···
         // Add requireHello parameter
         query_params.push(format!("requireHello={}", self.config.require_hello));
 
-        // Add wantedCollections if specified
-        if !self.config.collections.is_empty() {
-            let collections = self
-                .config
-                .collections
-                .iter()
-                .map(|c| urlencoding::encode(c))
-                .collect::<Vec<_>>()
-                .join(",");
-            query_params.push(format!("wantedCollections={}", collections));
+        // Add wantedCollections if specified (each collection as a separate query parameter)
+        if !self.config.collections.is_empty() && !self.config.require_hello {
+            for collection in &self.config.collections {
+                query_params.push(format!("wantedCollections={}", urlencoding::encode(collection)));
+            }
         }
 
-        // Add wantedDids if specified
-        if !self.config.dids.is_empty() {
-            let dids = self
-                .config
-                .dids
-                .iter()
-                .map(|d| urlencoding::encode(d))
-                .collect::<Vec<_>>()
-                .join(",");
-            query_params.push(format!("wantedDids={}", dids));
+        // Add wantedDids if specified (each DID as a separate query parameter)
+        if !self.config.dids.is_empty() && !self.config.require_hello {
+            for did in &self.config.dids {
+                query_params.push(format!("wantedDids={}", urlencoding::encode(did)));
+            }
         }
 
         // Add maxMessageSizeBytes if specified