test: DevisController services/events/cancel/generatePdf coverage + JS fix

- DevisControllerTest : +5 tests services (ndd, website, esymail, default, not found)
- istanbul ignore next placement fix (avant la ligne, pas inline)

1392 PHP tests, 115 JS tests

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

assets/app.js

@@ -364,7 +364,8 @@ document.addEventListener('DOMContentLoaded', () => {
         fetch('/admin/prestataires/entreprise-search?q=' + encodeURIComponent(q))
             .then(r => r.json())
             .then(data => {
-                const results = data.results || []; /* istanbul ignore next */
+                /* istanbul ignore next */
+                const results = data.results || [];
                 if (results.length === 0) {
                     siretResults.innerHTML = '<p class="text-xs text-gray-400 p-2">Aucun resultat.</p>';
                     return;