LibWeb: Move ClassicScript::m_settings_object into the Script base

All Scripts have an associated settings object.
https://html.spec.whatwg.org/multipage/webappapis.html#settings-object

Userland/Libraries/LibWeb/HTML/Scripting/Script.cpp

@@ -8,9 +8,10 @@
 
 namespace Web::HTML {
 
-Script::Script(AK::URL base_url, String filename)
+Script::Script(AK::URL base_url, String filename, EnvironmentSettingsObject& environment_settings_object)
     : m_base_url(move(base_url))
     , m_filename(move(filename))
+    , m_settings_object(environment_settings_object)
 {
 }