fix: Initial delay e2e test use a scaler without failures (#6185) #1576

Job	Run time
build	8m 46s
trivy-scan / Trivy - ubuntu-latest - fs	51s
trivy-scan-metrics-server (ARM64) / Trivy - ARM64 - image ghcr.io/kedacore/keda-metrics-apiserver:main	24s
trivy-scan-keda (ARM64) / Trivy - ARM64 - image ghcr.io/kedacore/keda:main	25s
trivy-scan-keda (ubuntu-latest) / Trivy - ubuntu-latest - image ghcr.io/kedacore/keda:main	29s
trivy-scan-metrics-server (ubuntu-latest) / Trivy - ubuntu-latest - image ghcr.io/kedacore/keda-metrics-apiserver:main	27s
validate / Run e2e test	1h 48m 24s
validate-k8s-versions / ubuntu-latest (v1.28) / Validate k8s-v1.28	6m 47s
validate-k8s-versions / ubuntu-latest (v1.29) / Validate k8s-v1.29	6m 49s
validate-k8s-versions / ubuntu-latest (v1.30) / Validate k8s-v1.30	6m 45s
validate-arm64 / ARM64 / Validate k8s-v1.30	7m 4s
	2h 27m 11s

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