Fix test method names to match standard wording

We have changed the name to Standard built-in objects, referring to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects.

Author: ledsun

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

@@ -182,14 +182,14 @@ def test_call_with_stress_gc
     GC.stress = false
   end
 
-  def test_new_embedded_object
+  def test_new_standard_built_in_object
     assert_equal 1.2, JS.global[:Number].new(1.23).toFixed(1).to_f
     assert_equal "hello", JS.global[:String].new("hello").to_s
     assert_equal 3, JS.global[:Array].new(1, 2, 3).pop().to_i
     assert_equal 2023, JS.global[:Date].new(2023, 1, 1).getFullYear().to_i
   end
 
-  def test_new_embedded_object_with_js_string
+  def test_new_standard_built_in_object_with_js_string
     assert_equal "hello", JS.global[:String].new(JS.eval("return 'hello'")).to_s
   end