chore: update subaccount_info query

[jeuryink]

No description provided.

[Copilot]

Pull request overview

This PR adds support for querying subaccount pre-state information when simulating transactions. The change enables retrieving the subaccount state both before and after applying simulated transactions.

Key changes:

• Added pre_state parameter to the get_subaccount_info query method
• Introduced PreState model to represent subaccount state before transaction application
• Updated the sanity check script to demonstrate the new pre-state functionality

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
sanity/engine_client.py	Added example code demonstrating the use of pre_state parameter with simulated transactions
nado_protocol/engine_client/types/query.py	Added PreState model and pre_state field to QuerySubaccountInfoParams and SubaccountInfoData
nado_protocol/engine_client/types/init.py	Exported the new PreState model
nado_protocol/engine_client/query.py	Updated get_subaccount_info method signature to accept pre_state parameter

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