refactor: add EncryptionKey type parameter to ExportableKeyEncryptor

[mikesposito]

Explanation

The ExportableKeyEncryptor type used to identify encryptor that support exported keys has been made generic, with a type parameter EncryptionKey to let the consumer define the type of key that will be used for encryption (e.g. CryptoKey). The type parameter defaults to unknown, making this non-breaking.

References

Changelog

@metamask/keyring-controller

• CHANGED: The ExportableKeyEncryptor is now a generic type with a type parameter EncryptionKey (#5395)
  • The type parameter defaults to unknown

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