fix: handle undefined/null input in stripHtmlTags function

Adds null check to prevent crash when recipe name or description fields are undefined.

src/lib/js/stripHtmlTags.ts

@@ -1,7 +1,10 @@
 // Function to strip HTML tags from a string
 import {load} from 'cheerio';
 
-export function stripHtmlTags(input: string): string {
+export function stripHtmlTags(input: string | undefined | null): string {
+  if (!input) {
+    return '';
+  }
   const $ = load(input.replace(/­/g, ''));
   return $.text();
 }