Migrate e2e test for Value metricType to Go

[JorTurFer]

Proposal

Relates to #2357, #2737.

Use-Case

No response

Anything else?

We should port this test to another simpler upstream to check it as internal feature
https://github.com/kedacore/keda/blob/main/tests/scalers/prometheus-value-metric-type.test.ts

[zroubalik]

+1, the tests should probably use Kubernetes Workload Scaler or some similar, that doesn't require addional service.

The current internal e2e tests should be transfered to this simple scaler as well -> tracked here: #3436