Bug: Listing messages does not respect the limit parameter

[bselwe]

Describe the bug

I'm trying to load the latest message for each conversation using client.listBatchMessage. This method seems to ignore the limit parameter and fetches all messages for each conversation instead.

It might be related to xmtp/xmtp-android#102.

Expected behavior

client.listBatchMessage respects the limit parameter in each conversation. It should return at most limit messages per each conversation.

Steps to reproduce the bug

final messages = await client.listBatchMessages(
  conversations,
  limit: 1,
);

/// For 8 conversations and the limit of 1, it returns 141 messages. 
/// Instead, it should return 1 message for each conversation (8 in total).