[#4825] Fix prefill when authentication is needed #15180

Job	Run time
Run the Django test suite	10m 11s
Set up docker build 'dynamic' env variables	1s
Build and check documentation	3m 53s
End-to-end tests, chromium	14m 42s
Run the Django test suite in reverse	5m 36s
End-to-end tests, firefox	17m 37s
End-to-end tests, webkit	13m 49s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	2m 46s
docker_build (production) / Build image	2m 48s
Scan docker image	2m 26s
Simulate upgrading instances (3.0.1)	1m 19s
Check for unexepected OAS changes	4s
Generate SDKs from OAS	58s
Validate OAS	25s
Generate Postman collection from OAS	9s
Push Docker image	0s
update-docker-readme	0s
	1h 16m 44s

Provide feedback