Fix catalog filter leaving items unclickable after filtering

Multi-word search now uses Array.every so word order doesn't matter.
Scroll is reset to top after each filter so visible items aren't hidden
off-screen. A forced layout reflow (offsetHeight read) ensures iOS Safari
re-registers filtered-in elements as interactive — without it, items that
transition from display:none back to visible remain unresponsive to taps.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Web/wwwroot/js/item-wizard.js

@@ -394,10 +394,21 @@ function renderProductFields() {
 }
 
 function filterCatalog() {
-    const q = document.getElementById('catalogSearch').value.toLowerCase();
-    document.querySelectorAll('#catalogListbox .catalog-list-item').forEach(el => {
-        el.style.display = (q && !el.textContent.toLowerCase().includes(q)) ? 'none' : '';
+    const q     = document.getElementById('catalogSearch').value.toLowerCase();
+    const words = q.split(/\s+/).filter(Boolean);
+    const listbox = document.getElementById('catalogListbox');
+    if (!listbox) return;
+    listbox.querySelectorAll('.catalog-list-item').forEach(el => {
+        const text = el.textContent.toLowerCase();
+        const hide = words.length > 0 && !words.every(w => text.includes(w));
+        el.style.display = hide ? 'none' : '';
     });
+    // Reset scroll so filtered-in items are always visible at the top.
+    listbox.scrollTop = 0;
+    // Force a layout recalculation — required on iOS Safari so elements that
+    // transition from display:none back to visible register as interactive.
+    // eslint-disable-next-line no-unused-expressions
+    listbox.offsetHeight;
 }
 
 function pickCatalogItem(el) {