fix: ensure all links are properly localized with locale prefix

- Update basePath to always include locale prefix (/)
- Fix productsHref to use basePath consistently
- Fix product links in ProductsGrid to use basePath
- Ensure /sr/pages link to /sr/products, /en to /en/products, etc.

src/app/[locale]/solutions/[slug]/page.tsx

@@ -88,7 +88,7 @@ export default async function SolutionPage({ params }: PageProps) {
   // Filter out bundle products (2x, 3x versions) - only show original 4 products
   const products = filterOutBundles(allProducts).slice(0, 4);
   
-  const basePath = validLocale === DEFAULT_LOCALE ? "" : `/${validLocale}`;
+  const basePath = `/${validLocale}`;
   
   const faqQuestions = page.faqs.map((faq) => ({
     question: getLocalizedString(faq.question, validLocale),