fix(tip-1034): sync escrow implementation with spec

[legion2002]

Stacks on #3704.\n\nSyncs the Rust TIP-1034 escrow precompile and payment classifiers with the updated spec/reference implementation: expiring-nonce channel IDs, operator settlement, terminal state deletion, same-transaction reopen protection, and channel escrow payment-lane admission.\n\nAdds focused coverage for the spec drift and uses bounded/manual calldata classification to avoid allocation-heavy pre-gas parsing.

[github-actions]

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tempo-contracts: major
tempo-precompiles: major
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Added operator and expiring nonce hash to TIP20 channel escrow descriptors, allowing operators to settle on behalf of payees and binding channels to per-transaction nonce hashes. Removed finalized channel tombstones in favor of deleting state on close/withdraw, with a same-transaction reopen guard via transient storage.

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