Properly clean temp files in Blockstore::create_new_ledger() (#19589)

Use TempDir::path() instead of TempDir::into_path(); into_path() returns
the underlying PathBuf and voids the promise to delete the directory
when TempDir goes out of scope.

ledger/src/blockstore.rs

@@ -3737,7 +3737,7 @@ pub fn create_new_ledger(
         // unpack into a temp dir, while completely discarding the unpacked files
         let unpack_check = unpack_genesis_archive(
             &archive_path,
-            &temp_dir.into_path(),
+            temp_dir.path(),
             max_genesis_archive_unpacked_size,
         );
         if let Err(unpack_err) = unpack_check {