Refactor immediate hydration data attribute handling in Pro features

- Updated the `helper.rb` file to modify how the `data-immediate-hydration` attribute is added to script tags, ensuring it is correctly applied during immediate hydration.
- Adjusted the test helper spec to correct the formatting of the immediate hydration script, enhancing clarity and functionality.

Author: AbanoubGhadban

lib/react_on_rails/pro_features/helper.rb

@@ -28,7 +28,7 @@ def apply_immediate_hydration_if_supported(component_specification_tag, render_o
         return component_specification_tag unless render_options.immediate_hydration && support_pro_features?
 
         # Add data attribute
-        component_specification_tag.gsub!(/>\z/, ' data-immediate-hydration="true">')
+        component_specification_tag.gsub!(/\<script /, '<script data-immediate-hydration="true" ')
 
         # Add immediate invocation script
         component_specification_tag.concat(
@@ -43,7 +43,7 @@ def apply_store_immediate_hydration_if_supported(store_hydration_data, redux_sto
         return store_hydration_data unless redux_store_data[:immediate_hydration] && support_pro_features?
 
         # Add data attribute
-        store_hydration_data.gsub!(/>\z/, ' data-immediate-hydration="true">')
+        store_hydration_data.gsub!(/\<script /, '<script data-immediate-hydration="true" ')
 
         # Add immediate invocation script
         store_hydration_data.concat(

spec/dummy/spec/helpers/react_on_rails_helper_spec.rb

@@ -368,9 +368,7 @@ def helper.append_javascript_pack_tag(name, **options)
 
     describe "'immediate_hydration' tag option" do
       let(:immediate_hydration_script) do
-        %(
-typeof ReactOnRails === 'object' && ReactOnRails.reactOnRailsComponentLoaded('App-react-component-0');
-        ).html_safe
+        %(typeof ReactOnRails === 'object' && ReactOnRails.reactOnRailsComponentLoaded('App-react-component-0');).html_safe
       end
 
       context "with 'immediate_hydration' == false" do