### Steps to reproduce

1. Setup Nextcloud and OpenProject with Keycloak

2. Login to NC and OP using Keycloak user

3. As Nextcloud admin, setup the integration with External SSO and token-exchange ENABLED

4. As Keycloak user in Nextcloud, check listing/linking WPs to the files


### What is the buggy behavior?

Every request to OP has Begin of the insertiona newEnd of the insertion Begin of the deletion na ewEnd of the deletion access token.

The token-exchange 

### What is the expected behavior?

Exchange the token and use it for all OP requests

### Important note

We must handle token expiration when using the stored token.

### Environment information

**integration\_openproject app: 2.9.1**