chore: Expose missing PermissionController methods through the messenger

[GuillaumeRx]

Explanation

This exposes missing methods used in the clients through the messenger after #8201

References

Progresses https://consensyssoftware.atlassian.net/browse/WPC-989

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

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Note

Low Risk
Low risk: this primarily expands the messenger-exposed API surface and TypeScript action types without changing permission logic, but consumers may start depending on these newly exposed actions.

Overview
Exposes additional PermissionController methods via the messenger by adding new action types and including them in the controller’s MESSENGER_EXPOSED_METHODS allowlist.

Newly exposed actions include acceptPermissionsRequest, rejectPermissionsRequest, revokePermission, updatePermissionsByCaveat, and getPermission, with corresponding exports from the package entrypoint and a changelog entry documenting the additions.

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[mcmire]

LGTM.