Remove to_s workaround in int comparation

Author: kateinoigakukun

packages/npm-packages/ruby-wasm-wasi/test/unit/test_object.rb

@@ -164,10 +164,9 @@ def test_method_missing_with_block
     result =
       obj.takeBlock do |a, b, c|
         block_called = true
-        # TODO: Compare them as integers after introducing `JS::Object#to_i`
-        assert_equal 1.to_s, a.to_s
-        assert_equal 2.to_s, b.to_s
-        assert_equal 3.to_s, c.to_s
+        assert_equal 1, a.to_i
+        assert_equal 2, b.to_i
+        assert_equal 3, c.to_i
       end
     assert_true block_called
   end