Make --enable-component-model the default for js gem

In this way, we can avoid the need to specify `BUNDLE_BUILD__JS=--enable-component-model`
when running `bundle install` for the `js` gem. When running `bundle install`, it's usually
dynamic-linking enabled, so it makes sense to enable the component model by default.

Author: kateinoigakukun

lib/ruby_wasm/build/product/crossruby.rb

@@ -78,7 +78,7 @@ def do_extconf(executor, crossruby)
         "#{@srcdir}/extconf.rb",
         "--target-rbconfig=#{rbconfig_rb}",
       ]
-      extconf_args << "--enable-component-model" if @features.support_component_model?
+      extconf_args << "--disable-component-model" unless @features.support_component_model?
       executor.system crossruby.baseruby_path, *extconf_args
     end
 
@@ -111,7 +111,7 @@ def do_legacy_extconf(executor, crossruby)
         "-I#{crossruby.build_dir}",
         "--",
       ]
-      extconf_args << "--enable-component-model" if @features.support_component_model?
+      extconf_args << "--disable-component-model" unless @features.support_component_model?
       # Clear RUBYOPT to avoid loading unrelated bundle setup
       executor.system crossruby.baseruby_path,
                       *extconf_args,

packages/gems/js/ext/js/extconf.rb

@@ -11,7 +11,7 @@
 
 $objs = %w[js-core.o witapi-core.o]
 
-use_component_model = enable_config("component-model", false)
+use_component_model = enable_config("component-model", true)
 $stderr.print "Building with component model: "
 $stderr.puts use_component_model ? "\e[1;32myes\e[0m" : "\e[1;31mno\e[0m"
 if use_component_model