chore: disable randomly failing test

/cc @mhuisi @Vtech234

tests/lean/server/init_exit.lean

@@ -1,6 +1,7 @@
 import Lean.Data.Lsp
 open IO Lean Lsp
 
+/-
 #eval (do
   Ipc.runWith (←IO.appPath) #["--server"] do
     let hIn ← Ipc.stdin
@@ -14,4 +15,5 @@ open IO Lean Lsp
     let shutdownResp ← Ipc.readResponseAs 1 Json
     assert! shutdownResp.result.isNull
     Ipc.writeNotification ⟨"exit", Json.null⟩
-  : IO Unit)
+  : IO Unit)
+-/