MCP Auth using new spec not persisting auth state

[TylerLeonhardt]

Steps to Reproduce:

1. >MCP: Add Server...
2. HTTP
3. Add a server that is knowingly implementing the draft MCP auth spec (using a protected resource)
4. Go through its auth flow
5. Reload window
6. Start server again
7. 🐛 auth state is not persisted

This is because the key to index in the storage account was computed improperly.

[TylerLeonhardt]

This may be a candidate... depending on usage