Fix discord login issue (#1028)

Fixes #1016

## Description:

Fix the zod user schema validation to make roles optional. This was
causing a validation error when looking up the user's roles.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

Co-authored-by: Scott Anderson <662325+scottanderson@users.noreply.github.com>

src/server/Client.ts

@@ -12,7 +12,7 @@ export class Client {
     public readonly clientID: ClientID,
     public readonly persistentID: string,
     public readonly claims: TokenPayload | null,
-    public readonly roles: string[] | null,
+    public readonly roles: string[] | undefined,
     public readonly ip: string,
     public readonly username: string,
     public readonly ws: WebSocket,

src/server/Worker.ts

@@ -314,7 +314,7 @@ export function startWorker() {
               config,
             );
 
-            const roles: string[] | null = null;
+            let roles: string[] | undefined;
 
             // Check user roles
             if (claims !== null) {
@@ -323,6 +323,7 @@ export function startWorker() {
                 log.warn("Token is not valid", claims);
                 return;
               }
+              roles = result.player.roles;
             }
 
             // TODO: Validate client settings based on roles