Summary:
When accessing the "My Data" page via the SPA interface, the API sometimes returns data for the previously authenticated JSF user, not the currently logged-in SPA user. This leads to incorrect data being shown in the "My Data" page, including draft datasets that do not belong to the currently authenticated user.

Steps to Reproduce:

1. Log in via JSF UI as User A.
2. Create or confirm presence of draft datasets.
3. Without clearing cookies or ending the JSF session, log in via SPA as User B.
4. Navigate to the "My Data" page in the SPA.
5. Observe the datasets listed.

Expected Result:
The page should only display datasets relevant to User B.

Actual Result:
The page displays datasets (e.g., drafts) that belong to User A, due to the API falling back on the JSF session instead of the current SPA context.