refactor: Clean Create/EditPolicy GraphQL implementation #2315

Namespace: <a href="https://detailurl.setting.custom-console-url-namespace.is.not.configured" rel="nofollow">insights-management-tenant
PipelineRun: <a href="https://console.redhat.com/application-pipeline/ns/insights-management-tenant/pipelinerun/compliance-frontend-on-pull-request-vs9xc" rel="nofollow">compliance-frontend-on-pull-request-vs9xc

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Status	Duration	Name
✅ Succeeded	6 seconds	init
✅ Succeeded	26 seconds	clone-repository-oci-ta
✅ Succeeded	14 seconds	clone-repository
✅ Succeeded	6 seconds	parse-build-deploy-script
✅ Succeeded	5 minutes	create-frontend-dockerfile
✅ Succeeded	1 minute	build-container
✅ Succeeded	15 seconds	rpms-signature-scan
✅ Succeeded	8 seconds	build-image-index
✅ Succeeded	24 seconds	ecosystem-cert-preflight-checks
✅ Succeeded	30 seconds	sast-snyk-check
✅ Succeeded	1 minute	clamav-scan
✅ Succeeded	15 seconds	deprecated-base-image-check
✅ Succeeded	58 seconds	clair-scan
✅ Succeeded	12 seconds	push-dockerfile
✅ Succeeded	6 seconds	apply-tags
✅ Succeeded	13 seconds	show-summary
✅ Succeeded	19 seconds	show-sbom