Add null check for ReactOnRails global object in component and store loading scripts

Author: AbanoubGhadban

lib/react_on_rails/helper.rb

@@ -644,7 +644,7 @@ def internal_react_component(react_component_name, options = {})
       if render_options.force_load
         component_specification_tag.concat(
           content_tag(:script, %(
-ReactOnRails.reactOnRailsComponentLoaded('#{render_options.dom_id}');
+typeof ReactOnRails === 'object' && ReactOnRails.reactOnRailsComponentLoaded('#{render_options.dom_id}');
           ).html_safe)
         )
       end
@@ -670,7 +670,7 @@ def render_redux_store_data(redux_store_data)
       if redux_store_data[:force_load]
         store_hydration_data.concat(
           content_tag(:script, <<~JS.strip_heredoc.html_safe
-            ReactOnRails.reactOnRailsStoreLoaded('#{redux_store_data[:store_name]}');
+            typeof ReactOnRails === 'object' && ReactOnRails.reactOnRailsStoreLoaded('#{redux_store_data[:store_name]}');
           JS
           )
         )

spec/dummy/spec/helpers/react_on_rails_helper_spec.rb

@@ -304,7 +304,7 @@ class PlainReactOnRailsHelper
     describe "'force_load' tag option" do
       let(:force_load_script) do
         %(
-ReactOnRails.reactOnRailsComponentLoaded('App-react-component-0');
+typeof ReactOnRails === 'object' && ReactOnRails.reactOnRailsComponentLoaded('App-react-component-0');
         ).html_safe
       end