Disallow revoking already revoked OATs

Author: myftija

apps/webapp/app/services/organizationAccessToken.server.ts

@@ -51,6 +51,7 @@ export async function revokeOrganizationAccessToken(tokenId: string) {
   await prisma.organizationAccessToken.update({
     where: {
       id: tokenId,
+      revokedAt: null,
     },
     data: {
       revokedAt: new Date(),