Enable eslint rule @stylistic/ts/indent (#1779)

## Description:

Enable eslint rule `@stylistic/ts/indent`. Fixes #1778

## 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/worker/websocket/handler/message/PreJoinHandler.ts

@@ -63,14 +63,14 @@ async function handleJoinMessage(
 ): Promise<
   | undefined
   | {
-      success: true;
-    }
+    success: true;
+  }
   | {
-      success: false;
-      code: 1002;
-      description: string;
-      error?: string;
-      reason:
+    success: false;
+    code: 1002;
+    description: string;
+    error?: string;
+    reason:
         | "ClientJoinMessageSchema"
         | "Flag invalid"
         | "Flag restricted"
@@ -80,20 +80,20 @@ async function handleJoinMessage(
         | "Pattern restricted"
         | "Pattern unlisted"
         | "Unauthorized";
-    }
+  }
   | {
-      success: false;
-      code: 1011;
-      reason: "Internal server error";
-      error: string;
-      description: string;
-    }
+    success: false;
+    code: 1011;
+    reason: "Internal server error";
+    error: string;
+    description: string;
+  }
 > {
   const forwarded = req.headers["x-forwarded-for"];
   const ip = Array.isArray(forwarded)
     ? forwarded[0]
     : // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
-      forwarded || req.socket.remoteAddress || "unknown";
+    forwarded || req.socket.remoteAddress || "unknown";
 
   try {
     // Parse and handle client messages