[API][Contact-us][Email] The message is sent even when the required email field is left empty or filled in the inappropriate format

[mozhaieva]

Environment: Postman Reproducible: Always Build found: 79fb490

Preconditions

1. Postman is opened.
2. The POST method is chosen
3. Valid endpoint https://stageback.streetcode.com.ua/api/email/send has been written
4. All required data has been added to the body: { "from": "string", "content": "string", "token": "string" }

Steps to reproduce	Actual result	Expected result	Status
1. Leave the email field empty and click the 'Send' button.	200 OK	400 Bad request Message "The Email field is required"	Fail
2. Enter the email without a dot in a domain name and click the 'Send' button (e.g. "test_email@ukrnet").	200 OK	400 Bad request Message "An inappropriate format in email field"	Fail
3. Enter the email without "@" before the domain name and click the 'Send' button (e.g. "test_emailukr.net").	200 OK	400 Bad request Message "An inappropriate format in email field"	Fail

User story #140

[sashapanasiuk5]

Fixed in https://github.com/ita-social-projects/StreetCode/issues/308