fix: pass token correctly, '&' instead of ',' (#1756)

fix: pass token correctly, '&' instead of ','

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: chandra-siri

google/cloud/storage/asyncio/async_appendable_object_writer.py

@@ -310,7 +310,7 @@ async def _do_open():
                 )
 
             await self.write_obj_stream.open(
-                metadata=current_metadata if metadata else None
+                metadata=current_metadata if current_metadata else None
             )
 
             if self.write_obj_stream.generation_number:

google/cloud/storage/asyncio/async_read_object_stream.py

@@ -115,7 +115,7 @@ async def open(self, metadata: Optional[List[Tuple[str, str]]] = None) -> None:
                     other_metadata.append((key, value))
 
         current_metadata = other_metadata
-        current_metadata.append(("x-goog-request-params", ",".join(request_params)))
+        current_metadata.append(("x-goog-request-params", "&".join(request_params)))
 
         self.socket_like_rpc = AsyncBidiRpc(
             self.rpc,

google/cloud/storage/asyncio/async_write_object_stream.py

@@ -145,7 +145,7 @@ async def open(self, metadata: Optional[List[Tuple[str, str]]] = None) -> None:
                 else:
                     final_metadata.append((key, value))
 
-        final_metadata.append(("x-goog-request-params", ",".join(request_param_values)))
+        final_metadata.append(("x-goog-request-params", "&".join(request_param_values)))
 
         self.socket_like_rpc = AsyncBidiRpc(
             self.rpc,