Set COPYFILE_DISABLE for mac os so it doesn't generate ._ files (#35213)

ledger/src/blockstore.rs

@@ -4315,6 +4315,7 @@ pub fn create_new_ledger(
         blockstore_dir,
     ];
     let output = std::process::Command::new("tar")
+        .env("COPYFILE_DISABLE", "1")
         .args(args)
         .output()
         .unwrap();