fix: handle multiple LDAP strategies (#5116)

server/models/users.js

@@ -308,7 +308,7 @@ module.exports = class User extends Model {
 
       // Authenticate
       return new Promise((resolve, reject) => {
-        WIKI.auth.passport.authenticate(selStrategy.strategyKey, {
+        WIKI.auth.passport.authenticate(selStrategy.key, {
           session: !strInfo.useForm,
           scope: strInfo.scopes ? strInfo.scopes : null
         }, async (err, user, info) => {