Improve file limit handling (#4242)

* Improve file limit handling

* Oops

* Update PostgreSQL migration

* Review comments

---------

Co-authored-by: BlackDex <black.dex@gmail.com>

src/api/core/accounts.rs

@@ -6,12 +6,14 @@ use serde_json::Value;
 use crate::{
     api::{
         core::log_user_event, register_push_device, unregister_push_device, AnonymousNotify, EmptyResult, JsonResult,
-        JsonUpcase, Notify, NumberOrString, PasswordOrOtpData, UpdateType,
+        JsonUpcase, Notify, PasswordOrOtpData, UpdateType,
     },
     auth::{decode_delete, decode_invite, decode_verify_email, ClientHeaders, Headers},
     crypto,
     db::{models::*, DbConn},
-    mail, CONFIG,
+    mail,
+    util::NumberOrString,
+    CONFIG,
 };
 
 use rocket::{