feat: re-submit attestation if node detects it has no attestation on chain

[pbeza]

Fixes #1198

[Copilot]

Pull Request Overview

This PR implements a mechanism to automatically re-submit attestations when a node detects it has been removed from the participant list on the blockchain. This helps ensure nodes maintain valid attestations after resharing events or other participant changes.

• Adds monitoring for contract state changes to detect participant removal
• Implements automatic attestation resubmission when a node transitions from participant to non-participant
• Spawns a dedicated task to continuously monitor contract state and trigger resubmissions

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
crates/node/src/tee/remote_attestation.rs	Implements core attestation monitoring logic and resubmission functionality
crates/node/src/cli.rs	Integrates the new monitoring task into the node startup process

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[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

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[netrome]

The test looks great now. I have some code nits but nothing blocking. I feel like we're duplicating some logic that can be unified. Primarily the retry loops and attestation submission logic.

[netrome]

Nice. Thanks for the updates