[#4134] Fix admin crash on component key edit with ZGW backend #11943

Job	Run time
Run the Django test suite	8m 42s
Run the Django test suite in reverse	5m 43s
Build and check documentation	1m 49s
End-to-end tests, chromium	10m 8s
End-to-end tests, firefox	12m 18s
Set up docker build 'dynamic' env variables	4s
End-to-end tests, webkit	11m 3s
docker_build (production) / Build image	7m 30s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	7m 6s
Check for unexepected OAS changes	4s
Validate OAS	20s
Generate Postman collection from OAS	34s
Generate SDKs from OAS	46s
Scan docker image	2m 22s
Push Docker image (production)	1m 0s
Push Docker image (extensions, all-extensions-)	1m 2s
update-docker-readme / Generate and update Docker Hub description	23s
	1h 10m 54s

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