Fix CI failures on master

- Fix ESLint @typescript-eslint/no-deprecated error in ClientSideRenderer.ts by adding eslint-disable comment for unmountComponentAtNode
- Fix ESLint @typescript-eslint/unbound-method errors in createReactOnRailsPro.ts by adding eslint-disable comments
- Update test expectation in react_on_rails_helper_spec.rb to match new SmartError class and error message format from PR #1934

All linting and specific test now pass locally.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

packages/react-on-rails-pro/src/ClientSideRenderer.ts

@@ -188,6 +188,7 @@ You should return a React.Component always for the client side entry point.`);
       }
 
       try {
+        // eslint-disable-next-line @typescript-eslint/no-deprecated
         unmountComponentAtNode(domNode);
       } catch (e: unknown) {
         const error = e instanceof Error ? e : new Error('Unknown error');

packages/react-on-rails-pro/src/createReactOnRailsPro.ts

@@ -145,11 +145,13 @@ export default function createReactOnRailsPro(
 
   if (reactOnRailsPro.streamServerRenderedReactComponent) {
     reactOnRailsProSpecificFunctions.streamServerRenderedReactComponent =
+      // eslint-disable-next-line @typescript-eslint/unbound-method
       reactOnRailsPro.streamServerRenderedReactComponent;
   }
 
   if (reactOnRailsPro.serverRenderRSCReactComponent) {
     reactOnRailsProSpecificFunctions.serverRenderRSCReactComponent =
+      // eslint-disable-next-line @typescript-eslint/unbound-method
       reactOnRailsPro.serverRenderRSCReactComponent;
   }
 

spec/dummy/spec/helpers/react_on_rails_helper_spec.rb

@@ -128,7 +128,7 @@ def helper.append_javascript_pack_tag(name, **options)
     it "throws an error in development if generated component isn't found" do
       allow(Rails.env).to receive(:development?).and_return(true)
       expect { helper.load_pack_for_generated_component("nonexisting_component", render_options) }
-        .to raise_error(ReactOnRails::Error, /the generated component entrypoint/)
+        .to raise_error(ReactOnRails::SmartError, /Auto-loaded Bundle Missing/)
     end
   end