fix: 🐛 revert PR 330 by removing the partial unique index

[royshunhung]

revert PR 330 by removing the partial unique index

✅ Closes: #2785

[github-actions]

Package	Line Rate	Branch Rate	Health
src	65%	50%	➖
src.api.applicant.content-types.applicant	25%	0%	❌
src.api.applicant.controllers	100%	100%	✔
src.api.applicant.routes	100%	100%	✔
src.api.applicant.services	100%	100%	✔
src.api.comment.content-types.comment	92%	50%	✔
src.api.comment.controllers	100%	100%	✔
src.api.comment.routes	100%	100%	✔
src.api.comment.services	100%	100%	✔
src.api.department.controllers	100%	100%	✔
src.api.department.routes	100%	100%	✔
src.api.department.services	100%	100%	✔
src.api.dl-tal-community.controllers	100%	100%	✔
src.api.dl-tal-community.routes	100%	100%	✔
src.api.dl-tal-community.services	100%	100%	✔
src.api.event.content-types.event	88%	100%	✔
src.api.event.controllers	100%	71%	✔
src.api.event.routes	100%	100%	✔
src.api.event.services	100%	100%	✔
src.api.github-repo.controllers	20%	100%	❌
src.api.github-repo.routes	100%	100%	✔
src.api.github-repo.services	31%	17%	❌
src.api.google-meet.content-types.google-meet	33%	100%	❌
src.api.google-meet.controllers	100%	100%	✔
src.api.google-meet.routes	100%	100%	✔
src.api.google-meet.services	100%	100%	✔
src.api.idea-card.content-types.idea-card	87%	58%	✔
src.api.idea-card.controllers	100%	100%	✔
src.api.idea-card.routes	100%	100%	✔
src.api.idea-card.services	100%	100%	✔
src.api.image-keyword-mapping.controllers	100%	100%	✔
src.api.image-keyword-mapping.routes	100%	100%	✔
src.api.image-keyword-mapping.services	100%	100%	✔
src.api.image.controllers	36%	38%	❌
src.api.image.routes	100%	100%	✔
src.api.image.services	6%	0%	❌
src.api.interest.content-types.interest	17%	0%	❌
src.api.interest.controllers	100%	100%	✔
src.api.interest.routes	100%	100%	✔
src.api.interest.services	100%	100%	✔
src.api.like.controllers	100%	100%	✔
src.api.like.routes	100%	100%	✔
src.api.like.services	100%	100%	✔
src.api.member.content-types.member	8%	0%	❌
src.api.member.controllers	100%	100%	✔
src.api.member.routes	100%	100%	✔
src.api.member.services	100%	100%	✔
src.api.newsletter.controllers	100%	100%	✔
src.api.newsletter.routes	100%	100%	✔
src.api.newsletter.services	100%	100%	✔
src.api.notification.controllers	100%	100%	✔
src.api.notification.policies	100%	88%	✔
src.api.notification.routes	100%	100%	✔
src.api.notification.services	100%	100%	✔
src.api.onboarding-applicant.content-types.onboarding-applicant	88%	71%	✔
src.api.onboarding-applicant.controllers	100%	100%	✔
src.api.onboarding-applicant.routes	100%	100%	✔
src.api.onboarding-applicant.services	100%	100%	✔
src.api.opportunity.controllers	100%	100%	✔
src.api.opportunity.routes	100%	100%	✔
src.api.opportunity.services	100%	100%	✔
src.api.profile.content-types.profile	12%	0%	❌
src.api.profile.controllers	100%	100%	✔
src.api.profile.routes	100%	100%	✔
src.api.profile.services	100%	100%	✔
src.api.project.controllers	100%	100%	✔
src.api.project.routes	100%	100%	✔
src.api.project.services	100%	100%	✔
src.api.save-idea.controllers	100%	100%	✔
src.api.save-idea.routes	100%	100%	✔
src.api.save-idea.services	100%	100%	✔
src.api.sendmail.controllers	100%	100%	✔
src.api.sendmail.routes	100%	100%	✔
src.api.sendmail.services	67%	100%	➖
src.api.subscription.controllers	100%	100%	✔
src.api.subscription.routes	100%	100%	✔
src.api.subscription.services	100%	100%	✔
src.api.team-membership.controllers	100%	100%	✔
src.api.team-membership.routes	100%	100%	✔
src.api.team-membership.services	100%	100%	✔
src.api.user-recommendations.controllers	10%	0%	❌
src.api.user-recommendations.routes	100%	100%	✔
src.extensions.users-permissions	100%	100%	✔
src.extensions.users-permissions.controllers	33%	100%	❌
src.extensions.users-permissions.routes.content-api	100%	100%	✔
src.extensions.users-permissions.server.bootstrap	100%	62%	✔
src.extensions.users-permissions.server.middlewares	70%	59%	➖
src.extensions.users-permissions.server.services	10%	0%	❌
src.migrators	60%	50%	❌
Summary	50% (377 / 758)	30% (74 / 250)	❌