core&ui: fix defaultPriv edit (#444)

Co-authored-by: undefined <i@undefined.moe>

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "4.1.0",
+    "version": "4.1.1",
     "bin": "bin/hydrooj.js",
     "main": "src/plugin-api",
     "module": "src/plugin-api",

packages/hydrooj/src/handler/manage.ts

@@ -286,10 +286,11 @@ class SystemUserPrivHandler extends SystemHandler {
     }
 
     @requireSudo
-    @param('uid', Types.Int, true)
+    @param('uid', Types.Int)
     @param('priv', Types.UnsignedInt)
-    async post(domainId: string, uid: number, priv: number) {
-        if (typeof uid === 'number') {
+    @param('system', Types.Boolean, true)
+    async post(domainId: string, uid: number, priv: number, editSystem: boolean) {
+        if (!editSystem) {
             const udoc = await user.getById(domainId, uid);
             if (!udoc) throw new UserNotFoundError(uid);
             if (udoc.priv === -1 || priv === -1 || priv === allPriv) throw new ForbiddenError('you can not edit user as SU in web.');