refacto(invite|signin): remove unused code + fix signin on invite page. (#9745)

- Replace `window.location.replace` by `useRedirect` hook.
- Remove unused code: `switchWorkspace, addUserByInviteHash...`
- Refacto `Invite` component.
- Fix signin on invite modal.

packages/twenty-front/src/modules/auth/graphql/mutations/switchWorkspace.ts

@@ -1,23 +0,0 @@
-import { gql } from '@apollo/client';
-
-export const SWITCH_WORKSPACE = gql`
-  mutation SwitchWorkspace($workspaceId: String!) {
-    switchWorkspace(workspaceId: $workspaceId) {
-      id
-      subdomain
-      authProviders {
-        sso {
-          id
-          name
-          type
-          status
-          issuer
-        }
-        google
-        magicLink
-        password
-        microsoft
-      }
-    }
-  }
-`;