[RHCLOUD-37053] Simplify email connector internal logic #3227

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PipelineRun: <a href="https://console.redhat.com/application-pipeline/ns/hcc-integrations-tenant/pipelinerun/notifications-recipients-resolver-on-pull-request-fqqxb" rel="nofollow">notifications-recipients-resolver-on-pull-request-fqqxb

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Red Hat Konflux/notifications-recipients-resolver-on-pull-request has successfully validated your commit.

Status	Duration	Name
✅ Succeeded	12 seconds	init
✅ Succeeded	17 seconds	clone-repository
✅ Succeeded	1 minute	build-container
✅ Succeeded	8 seconds	build-image-index
✅ Succeeded	24 seconds	rpms-signature-scan
✅ Succeeded	1 minute	coverity-availability-check
✅ Succeeded	1 minute	sast-unicode-check
✅ Succeeded	51 seconds	push-dockerfile
✅ Succeeded	3 minutes	clamav-scan
✅ Succeeded	21 seconds	deprecated-base-image-check
✅ Succeeded	1 minute	sast-shell-check
✅ Succeeded	23 seconds	sast-snyk-check
✅ Succeeded	21 seconds	apply-tags
✅ Succeeded	45 seconds	clair-scan
✅ Succeeded	31 seconds	ecosystem-cert-preflight-checks
✅ Succeeded	13 seconds	show-sbom
✅ Succeeded	13 seconds	show-summary