Update cypress and fix flaky tests

Update cypress version, and add retries for flaky tests. Also add
optional chaining to autocomplete to avoid generating js error messages
when no autocomplete test results are present.

cypress.config.js

@@ -11,6 +11,7 @@ module.exports = defineConfig({
     setupNodeEvents(on, config) {
       return require('./cypress/plugins/index.js')(on, config)
     },
+    retries: {'runMode': 2},
     baseUrl: 'http://localhost:63001',
   },
 })

package.json

@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "css-loader": "^6.3.0",
-    "cypress": "^13.7.1",
+    "cypress": "^13.13.0",
     "cypress-file-upload": "^5.0.8",
     "cypress-wait-until": "^1.7.2",
     "expose-loader": "^3.0.0",

plugins/arDominionB5Plugin/js/searchBox.js

@@ -32,7 +32,7 @@
           );
         },
         searchPost: (response, $element) => {
-          if (response.length && $element.val().length >= 3) {
+          if (response?.length && $element?.val().length >= 3) {
             $results.html(response);
             dropdown.show();
           } else {