Enable the @typescript-eslint/no-unsafe-member-access eslint rule (#1833)

## Description:

Enable the `@typescript-eslint/no-unsafe-member-access` eslint rule.

Fixes #1783

## 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

src/server/GameServer.ts

@@ -226,7 +226,7 @@ export class GameServer {
       );
     });
     client.ws.on("error", (error: Error) => {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
       if ((error as any).code === "WS_ERR_UNEXPECTED_RSV_1") {
         client.ws.close(1002, "WS_ERR_UNEXPECTED_RSV_1");
       }