feat(wallets): add infrastructure for Trezor session_id reuse across multiple signers

[crStiv]

Motivation

• Closes feat(wallets): reuse session_id across multiple TrezorSigner #9388

When using Trezor hardware wallets with passphrase enabled, each new TrezorSigner instance requires re-entering the passphrase, creating poor UX when multiple wallets are needed (e.g., forge script --trezor --mnemonic-indexes 0,1,2).

Solution

Implemented infrastructure for session_id reuse across multiple TrezorSigner instances:

• Added create_trezor_signer_with_session() and create_trezor_signer_and_get_session() utility functions
• Enhanced WalletSigner with from_trezor_path_with_session() method
• Refactored trezors() function to establish session with first signer and reuse for subsequent ones
• Graceful fallback when session_id extraction is unavailable

Note: Session_id extraction currently returns None due to alloy-signer-trezor crate limitations, but infrastructure is ready for when upstream support becomes available.

PR Checklist

• Added Tests
• Added Documentation
• Breaking changes