fix(auth0-server-js): StatelessStateStore cookie options

[CarsonF]

Description

Fixes constructor param type to allow age configuration, as the runtime logic already considers.
Allows sameSite & secure to be configured as well.
These changes just mirror the Stateful implementation.

new StatelessStateStore({
  absoluteDuration: '..',
  cookie: { sameSite: 'strict' }
})

Testing

Describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If this library has unit and/or integration testing, tests should be added for new functionality and existing tests should complete without errors.

Please include any manual steps for testing end-to-end or functionality not covered by unit/integration tests.

Also include details of the environment this PR was developed in (language/platform/browser version).

• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not the default branch

[frederikprijck]

Thanks, I missed this!