HMS-5036: Update upload modal to allow cancellation #402

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/content-sources-frontend-on-pull-request-rwkn6" rel="nofollow">content-sources-frontend-on-pull-request-rwkn6

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Status	Duration	Name
✅ Succeeded	5 seconds	init
✅ Succeeded	16 seconds	clone-repository
✅ Succeeded	22 seconds	clone-repository-oci-ta
✅ Succeeded	22 seconds	parse-build-deploy-script
✅ Succeeded	5 minutes	create-frontend-dockerfile
✅ Succeeded	1 minute	build-container
✅ Succeeded	10 seconds	build-image-index
✅ Succeeded	6 seconds	apply-tags
✅ Succeeded	52 seconds	clair-scan
✅ Succeeded	14 seconds	deprecated-base-image-check
✅ Succeeded	1 minute	clamav-scan
✅ Succeeded	33 seconds	sast-snyk-check
✅ Succeeded	22 seconds	push-dockerfile
✅ Succeeded	20 seconds	rpms-signature-scan
✅ Succeeded	39 seconds	ecosystem-cert-preflight-checks
✅ Succeeded	18 seconds	show-summary
✅ Succeeded	20 seconds	show-sbom