fix: remove query param on logout

[rupato-deriv]

This pull request includes changes to ensure that the query_param_currency is removed from sessionStorage upon logging out. This update affects both the CoreStoreProvider component and the useOauth2 hook.

Changes to session storage management:

• src/app/CoreStoreProvider.tsx: Added logic to remove query_param_currency from sessionStorage during the OAuth logout process.
• src/hooks/auth/useOauth2.ts: Added logic to remove query_param_currency from sessionStorage in the logoutHandler function.

[github-actions]

Name	Result
Build status	Failed ❌
Action URL	Visit Action