fix: Revert eth-sig-util package

[OGPoyraz]

Explanation

The recent changes in the eth-sig-util package was adding schema was too strict for Permit type of signatures hence we need to revert change.

References

Changelog

@metamask/signature-controller

• Changed: Revert back to eth-sig-util@8.0.0

@metamask/message-manager

• Changed: Revert back to eth-sig-util@8.0.0

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 highlighted breaking changes using the "BREAKING" category above as appropriate
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes