Always allow assigning author (#744)

Fixes #359

Co-authored-by: Daniel Kiss <dkiss1@bloomberg.net>

Author: jay4ay

docs/changelog.rst

@@ -1,5 +1,6 @@
 CHANGELOG
 =====================================
+| April 29, 2024: fix: Always allow assigning author  `#744 <https://github.com/mergeability/mergeable/pull/744>`_
 | Mar 11, 2024: fix: bump dependencies probot, jest and nock to latest versions and update ci workflow to use node 20 `#738 <https://github.com/mergeability/mergeable/pull/738>`_ 
 | Feb 27, 2024: fix: search and replace of special annotations `#735 <https://github.com/mergeability/mergeable/pull/735>`_
 | May 12, 2023: fix: Loading teams for team option of author filter/validator `#713 <https://github.com/mergeability/mergeable/pull/713>`_

lib/actions/assign.js

@@ -17,7 +17,10 @@ class Assign extends Action {
     const payload = this.getPayload(context)
     const issueNumber = payload.number
     const assignees = settings.assignees.map(assignee => searchAndReplaceSpecialAnnotations(assignee, payload))
-    const checkResults = await Promise.all(assignees.map(assignee => this.githubAPI.checkUserCanBeAssigned(context, issueNumber, assignee)))
+    const checkResults = await Promise.all(assignees.map(
+      assignee => assignee === payload.user.login
+        ? assignee
+        : this.githubAPI.checkUserCanBeAssigned(context, issueNumber, assignee)))
 
     const authorizedAssignees = checkResults.filter(assignee => assignee !== null)