fix: rsbuild issues (#3152)

Author: Raubzeug

rsbuild.config.ts

@@ -83,6 +83,8 @@ export default defineConfig({
         sourceMap: {
             js: process.env.GENERATE_SOURCEMAP !== 'false' ? 'source-map' : false,
         },
+        // Inline CSS in development to prevent FOUC
+        injectStyles: process.env.NODE_ENV === 'development',
     },
     html: {
         template: './public/index.html',

src/store/reducers/capabilities/capabilities.ts

@@ -30,7 +30,10 @@ export const capabilitiesApi = api.injectEndpoints({
                 } catch (error) {
                     // If capabilities endpoint is not available, there will be an error
                     // That means no new features are available
-                    return {error};
+                    // Serialize the error to make it Redux-compatible
+                    const serializedError =
+                        error instanceof Error ? {message: error.message, name: error.name} : error;
+                    return {error: serializedError};
                 }
             },
         }),