Re-filter results when registry items load asynchronously

If the user types a search query before registryItems finishes
loading, filteredItems would be empty and stay stale. Add an
onChange handler for registryItems to re-run the filter, matching
the pattern used in ThemeSettingsView.

Author: ayush-that

CodeEdit/Features/Settings/Pages/Extensions/LanguageServersView.swift

@@ -78,6 +78,15 @@ struct LanguageServersView: View {
                     }
                 }
             }
+            .onChange(of: registryManager.registryItems) { _, _ in
+                guard !searchText.isEmpty else { return }
+                let query = searchText.lowercased()
+                filteredItems = registryManager.registryItems.filter { item in
+                    item.sanitizedName.lowercased().split(separator: " ").contains {
+                        $0.hasPrefix(query)
+                    }
+                }
+            }
             .sheet(item: $selectedInstall) { operation in
                 LanguageServerInstallView(operation: operation)
             }