test: support CircuitBreaker migration on mainnet

[skhomuti]

Backports CircuitBreaker migration support from develop to main without pulling the full deployment refactor.

What Changed

• Updated mainnet deploy and upgrade artifacts to expose the live CircuitBreaker.
• Replaced active GateSeal deploy/grant steps in the deployment scripts with CircuitBreaker role grants.
• Kept legacy GateSeal parsing/revoke paths only where they are still needed for old artifacts and migration context.
• Updated fork fixtures and role invariants to expect the reseal manager plus the configured CircuitBreaker.
• Added CircuitBreaker fork pause coverage for CSM, accounting, oracle, verifier, vetted gate, and ejector.
• Made CircuitBreaker pause tests use the current pauser state directly, without calling heartbeat() in test setup.

Context

The scripts regression workflow executes the pending Dual Governance proposal on a mainnet fork before running staking-modules tests. main needs these test and deployment-script updates so the fork state matches the post-migration CircuitBreaker setup.

Validation

• staking-modules CI is green on this PR.
• scripts CSM regression workflow was dispatched against this branch and passed.

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 623034e1dc

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 265e7464f1

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 814c47a14e

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 5510dd1a69

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".