Refactor tests, documentation, and component code for consistent formatting and improved readability

- Reformatted test files (`RegistrationActivityChart.test.tsx`, `DemoCredentialsModal.test.tsx`) for indentation consistency.
- Reduced inline style verbosity across components and docs (`DemoModeBanner`, `CodeBlock`, `MarkdownContent`).
- Enhanced Markdown documentation (`sync-msw-with-openapi.md`, `MSW_AUTO_GENERATION.md`) with spacing updates for improved clarity.
- Updated MSW configuration to simplify locale route handling in `browser.ts`.

frontend/src/mocks/browser.ts

@@ -68,7 +68,12 @@ export async function startMockServiceWorker() {
         }
 
         // Ignore locale routes (Next.js i18n)
-        if (url.pathname === '/en' || url.pathname === '/it' || url.pathname.startsWith('/en/') || url.pathname.startsWith('/it/')) {
+        if (
+          url.pathname === '/en' ||
+          url.pathname === '/it' ||
+          url.pathname.startsWith('/en/') ||
+          url.pathname.startsWith('/it/')
+        ) {
           return;
         }