chore: improve number widget tests (#2223)

cypress/utils/README.md

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+## Utilities for integration tests
+
+Utils in this dir must be explicitly included in each spec file, e.g.:
+
+```
+import '../utils/dismiss-local-backup';
+```
+
+For routines to be executed on all tests, please use the `cypress/plugins.index.js` file instead: https://docs.cypress.io/guides/core-concepts/writing-and-organizing-tests.html#Plugin-files

cypress/utils/dismiss-local-backup.js

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+import { getPhrases } from 'Constants/defaultPhrases';
+
+// Prevents unsaved changes in dev local storage from being used
+Cypress.on('window:confirm', message => {
+  const {
+    editor: {
+      editor: { confirmLoadBackup },
+    },
+  } = getPhrases();
+
+  switch (message) {
+    case confirmLoadBackup:
+      return false;
+    default:
+      return true;
+  }
+});