fix(helpers): When getting publons from the back-end, the array contains duplicate objects.

packages/component-publons/src/routes/publons/helpers.js

+const { chain } = require('lodash')
+
 module.exports = {
   parseReviewers: ({ publonsReviewers, existingReviewers }) =>
-    publonsReviewers
+    chain(publonsReviewers)
       .filter(rev => rev.profileUrl && rev.contact.emails.length > 0)
       .filter(
         rev =>
@@ -14,5 +16,7 @@ module.exports = {
         profileUrl: reviewer.profileUrl,
         reviews: reviewer.numVerifiedReviews,
         affiliation: reviewer.recentOrganizations[0].name,
-      })),
+      }))
+      .uniqBy('email')
+      .value(),
 }