Rocket.Chat fix: Correct email validation and error message display in MailExportForm

Proposed changes (including videos or screenshots)

The validateEmail function has been updated to correctly validate email addresses according to the RFC standard. It now correctly identifies email addresses without a top-level domain (e.g., "user@domain") as invalid.

The error message for the messagesCount field is now only displayed when the user doesn't select any message https://github.com/user-attachments/assets/5c0fa949-ff12-4b41-9718-c5b226d7c82c

Issue(s)

Closes #32974

Steps to test or reproduce

1.Navigate to the MailExportForm component. 2.Test the email validation by entering an email address without a top-level domain and attempting to submit the form. The form should correctly identify the email as invalid. 3.Select a message. The error message for the messagesCount field should not be displayed when you have selected the messages.

Further comments

Aug 03 '24 12:08 smritidoneria

⚠️ No Changeset found

Latest commit: 994ab4192d6d29fe23e3ba38d4476ac8f86f0f02

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