Zod v4 update (#1546)

## Description:

This contains the update from zod 3.25 to 4. Change imports back from
zod/v4 to just zod. No errors in VSCode.

## 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 have read and accepted the CLA aggreement (only required once).

## Please put your Discord username so you can be contacted if a bug or
regression is found:

tryout33

src/server/GameServer.ts

@@ -1,7 +1,7 @@
 import ipAnonymize from "ip-anonymize";
 import { Logger } from "winston";
 import WebSocket from "ws";
-import { z } from "zod/v4";
+import { z } from "zod";
 import {
   ClientID,
   ClientMessageSchema,

src/server/Worker.ts

@@ -6,7 +6,7 @@ import { base64url } from "jose";
 import path from "path";
 import { fileURLToPath } from "url";
 import { WebSocket, WebSocketServer } from "ws";
-import { z } from "zod/v4";
+import { z } from "zod";
 import { GameEnv } from "../core/configuration/Config";
 import { getServerConfigFromServer } from "../core/configuration/ConfigLoader";
 import { COSMETICS } from "../core/CosmeticSchemas";

src/server/jwt.ts

@@ -1,5 +1,5 @@
 import { jwtVerify } from "jose";
-import { z } from "zod/v4";
+import { z } from "zod";
 import {
   TokenPayload,
   TokenPayloadSchema,