fix: feed-by-ids losing posts when closing modal (#5327)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: omBratteng <1681525+omBratteng@users.noreply.github.com>

Author: Copilot

packages/shared/src/hooks/usePostModalNavigation.ts

@@ -241,7 +241,9 @@ export const usePostModalNavigation = ({
     isFetchingNextPage: false,
     selectedPostIsAd,
     onCloseModal: async () => {
-      const searchParams = new URLSearchParams(window.location.search);
+      // Extract query params from baseAsPath to preserve original params like 'id'
+      const baseUrl = new URL(baseAsPath, window.location.origin);
+      const searchParams = new URLSearchParams(baseUrl.search);
 
       await router.push(
         getPathnameWithQuery(basePathname, searchParams),