fix: my issue duplication (#1882)

Co-authored-by: Plane Team <planeteam@srirams-Mac-mini.local>

apiserver/plane/api/views/issue.py

@@ -370,7 +370,7 @@ def get(self, request, slug):
                     )
                 )
                 .filter(**filters)
-            )
+            ).distinct()
 
             # Priority Ordering
             if order_by_param == "priority" or order_by_param == "-priority":