fix database test for new test data widgets

13 jobs for example-dashboard in 2 minutes and 11 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #564749
docker
build:backend

00:00:28

passed #564750
linux shell
build:docker

00:00:22

 
  Test
passed #564756
docker
test:dashboard

00:00:44

passed #564752
docker
test:database

00:00:48

passed #564759
docker
test:file

00:00:35

passed #564751
docker
test:gotest

00:01:43

92.5%
passed #564761
docker
test:healthz

00:00:30

passed #564753
docker
test:scenario

00:00:50

passed #564755
docker
test:signal

00:00:47

passed #564754
docker
test:simulationmodel

00:00:52

passed #564758
docker
test:simulator

00:00:48

passed #564760
docker
test:user

00:00:33

passed #564757
docker
test:widget

00:00:48