chore: expose session id

[marandaneto]

:bulb: Motivation and Context

Exposes session id, similar to JS Exposes a setter but not publically

:green_heart: How did you test it?

there are unit tests already, only refactored to its class so it is accessible (the getter) but not the setter via the public API

:pencil: Checklist

• [X] I reviewed the submitted code.
• [ ] I added tests to verify the changes.
• [ ] I updated the docs if needed.
• [X] No breaking change or entry added to the changelog.