fix: should invalidate previous session data when got session expired/invalid error

[Neko-Life]

Changes in this PR

Session expired/invalid was not handled in the previous PR (#1606)

• Fix Bot still sometimes crashes while in a VC when a shard reconnection occurs #1613 (probably, unable to repro)
• Fix endless reconnect caused by invalid session

Code change checklist

• I have ensured that all methods and functions are fully documented using doxygen style comments.
• My code follows the coding style guide.
• I tested that my change works before raising the PR.
• I have ensured that I did not break any existing API calls.
• I have not built my pull request using AI, a static analysis tool or similar without any human oversight.

[netlify]

✅ Deploy Preview for dpp-dev ready!

Name	Link
🔨 Latest commit	99cbcff
🔍 Latest deploy log	https://app.netlify.com/projects/dpp-dev/deploys/6a5bbf18faa3fd00084e708c
😎 Deploy Preview	https://deploy-preview-1614--dpp-dev.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[Jaskowicz1]

I'm happy with this! Wanting to hear from another person before merge