feat: batched sync notes

[TomasArrachea]

This PR adapts the client to the changes introduced in the SyncNotes endpoints 0xMiden/node#1843.

Before: sync_notes returned a single block per call. The client sync state was driven by the sync_notes. For each matched block, sync_chain_mmr and sync_transactions was used.

Now, the sync state works like so:

1. get_block_header_by_number: single call to discover the chain tip.
2. sync_chain_mmr: single call to get the full MMR delta to the chain tip.
3. sync_notes: loop get the note updates for the block range (may be paginated).
4. sync_transactions: single call to get all transaction updates.

Applying the sync result:

• Apply the MMR delta, then add the chain tip block as a leaf.
• For each note block with relevant notes, call partial_mmr.track() using the MMR auth path from the
  response.
• Store the chain tip block header for transaction references.