Chetan hotfix email validation

[Chetan0606]

Description

Hotfix for PR 2559

Only error messages are displayed and successful email messages are not displayed

Related PRS (if any):

To test this backend PR you need to checkout the development branch of frontend PR.

Main changes explained:

• Import was not added after making the changes in the backend which now caused issue in frontend

How to test:

1. check into current branch
2. do npm install and npm run build and npm start to run this PR locally
3. Clear site data/cache
4. log as owner/admin user
5. go to dashboard→ Other Links→ Send Emails → Enter the email list separated by comma → Click send email to specific user
6. verify if you are getting an invalid email message in the top right corner if you have entered an invalid email and a success message when it's a valid one.

Screenshots or videos of changes:

Recording.2024-10-12.231553.mp4