Use senderTimestampMs instead of messageTimestamp (#348)

* Use senderTimestampMs instead of messageTimestamp

* Add .toNumber(), because senderTimestampMs is Long

* chore: Fix linting

---------

Co-authored-by: Rajeh Taher <rajeh@reforward.dev>

src/Utils/process-message.ts

@@ -386,7 +386,7 @@ const processMessage = async(
 								{
 									pollUpdateMessageKey: message.key,
 									vote: voteMsg,
-									senderTimestampMs: message.messageTimestamp,
+									senderTimestampMs: (content.pollUpdateMessage.senderTimestampMs! as Long).toNumber(),
 								}
 							]
 						}