Explain how to verify email for Sends

src/_locales/en/messages.json

@@ -1718,5 +1718,11 @@
   },
   "passwordConfirmationDesc": {
     "message": "This action is protected. To continue, please re-enter your master password to verify your identity."
+  },
+  "emailVerificationRequired": {
+    "message": "Email Verification Required"
+  },
+  "emailVerificationRequiredDesc": {
+    "message": "You must verify your email to use this feature. You can verify your email in the web vault."
   }
 }

src/background/runtime.background.ts

@@ -192,6 +192,15 @@ export default class RuntimeBackground {
             case 'reloadPopup':
                 this.messagingService.send('reloadPopup');
                 break;
+            case 'emailVerificationRequired':
+                this.messagingService.send('showDialog', {
+                    dialogId: 'emailVerificationRequired',
+                    title: this.i18nService.t('emailVerificationRequired'),
+                    text: this.i18nService.t('emailVerificationRequiredDesc'),
+                    confirmText: this.i18nService.t('ok'),
+                    type: 'info',
+                });
+                break;
             default:
                 break;
         }