refactor(tender-details): enhance translation page tests and layout

- Updated Cypress tests for the tender translation page to improve visibility checks and streamline assertions.
- Refactored test structure to utilize a dedicated function for fetching the visible title heading.
- Adjusted test cases to ensure accurate language switching and URL handling for tender details.
- Improved layout consistency in the translation page by refining element visibility checks and ensuring proper section rendering.

src/app/tenders/[details]/components/section-heading.tsx

@@ -0,0 +1,13 @@
+import type { ReactNode } from "react";
+
+export function SectionHeading({ children }: { children: ReactNode }) {
+  return (
+    <div className="mb-4 flex items-center gap-3">
+      <span className="h-px flex-1 bg-gradient-to-r from-stroke/0 via-stroke/80 to-stroke/0 dark:from-dark-3/0 dark:via-dark-3 dark:to-dark-3/0" />
+      <h2 className="shrink-0 text-[11px] font-semibold uppercase tracking-[0.2em] text-dark-5 dark:text-dark-6">
+        {children}
+      </h2>
+      <span className="h-px flex-1 bg-gradient-to-l from-stroke/0 via-stroke/80 to-stroke/0 dark:from-dark-3/0 dark:via-dark-3 dark:to-dark-3/0" />
+    </div>
+  );
+}