fix(eslint): Add array-callback-return rule

.eslintrc.js

 
         // Best Practices group
         'accessor-pairs': 0,
+        'array-callback-return': 2,
 
         'prefer-spread': 2,
         'require-yield': 2,

modules/xmpp/JingleSessionPC.js

                 sender = s;
                 return true;
             }
+            return false;
         });
 
         if (sender) {