IMPROVEMENT — Session revoke button missing handler

[deekshithgowda85]

File: components/console/account-page-client.tsx
Console Page: Account
Type: Improvement
Effort: Easy (< 30 min)
Problem: "Revoke" session button is rendered without an onClick handler.
Fix: Add a revokeSession(sessionId) handler that calls the backend and updates UI.

[prakshithamalla-art]

Hey @deekshithgowda85 I want to work on this issue. Please assign it to me.