Fix wishlist modal overlay and enable vertical scrolling

Ensures the loading overlay is always hidden when opening the wishlist modal, including on error or early return. Updates CSS to allow vertical scrolling in the modal while keeping horizontal overflow hidden.

webui/static/script.js

@@ -5836,6 +5836,7 @@ async function openDownloadMissingWishlistModal(category = null) {
             process.modalElement.style.display = 'flex';
             WishlistModalState.setVisible(); // Track that modal is now visible
         }
+        hideLoadingOverlay(); // Always hide overlay before returning
         return; // Don't create a new one
     }
 
@@ -5868,6 +5869,7 @@ async function openDownloadMissingWishlistModal(category = null) {
         
     } catch (error) {
         showToast(`Failed to fetch wishlist data: ${error.message}`, 'error');
+        hideLoadingOverlay();
         return;
     }
     

webui/static/style.css

@@ -9337,7 +9337,8 @@ body {
     flex-direction: column;
     padding: 16px 28px 25px 28px;
     gap: 20px;
-    overflow: hidden;
+    overflow-y: auto; /* Allow vertical scrolling */
+    overflow-x: hidden;
 }
 
 /* Dashboard Stats Section */