[Error messages] Incorrect error messages appear in "Створити запрошення" modal window when invalid data is entered

[NataliiaMaistruk]

Environment: Windows 10 Pro, Google Chrome 106.0.5249.119, Firefox Version 105.0.1
Reproducible: always
Build found: https://home-project-ui.herokuapp.com/main/invitations

Preconditions
Cooperation admin is logged in
Invitation section is opened
"Створити запрошення" modal window appeared

Steps to reproduce	Actual result	Expected result
1. Click in an Email field. Focus out	"Це обов'язкове поле" message appears after focus out	"Це обов'язкове поле" message appears when the user has entered symbols and deleted all of them and displayed until the user has entered at least one symbol
2. Enter one symbol in Email field	Validation error message is not appear	Validation error message "Мінімальна кількість символів - 7" appears when the user has entered one symbol and displayed until the user has entered 7 symbols.
3. Enter correct email but without "at" (@) symbol. ( Ex. john.doegmail.com) Focus out.	Error message "Електронна пошта містить латинські букви, цифри, та спеціальні символи" appear	"Введіть адресу електронної пошти у форматі [email protected]" appears when the user has entered a valid number of symbols and displayed until the user has entered “at ” ( @) symbol
4. Enter correct email but without a dot (.) symbol placed after the domain name before the top-level domain (Ex. john.doe@gmailcom) Focus out.	Error message "Електронна пошта містить латинські букви, цифри, та спеціальні символи" appears	"Введіть адресу електронної пошти у форматі [email protected]" appears when the user has entered a valid number of symbols and displayed until the user has entered a dot (.) symbol placed after the domain name before the top-level domain
5. Enter the email with the special symbol at the beggining and/or end (Ex. &[email protected]?) focus out	Error message "Електронна пошта містить латинські букви, цифри, та спеціальні символи" appears	"Перший та останній символи не можуть бути спеціальними" appears when the user has entered a valid number of symbols and displayed until the user has deleted special symbol placed in the beginning and/or end
6. Enter email address which was already used for registration in the system (Ex. [email protected])	Validation error message is not appear. Invitation is created again. (Look at attachment)	"Користувач з вказаною електронною поштою вже зареєстрований, введіть іншу" appears when the user has entered a valid email address and until the user has deleted at least one symbol. Invitation shouldn't be created.

This bug is also reproduced on the Register cooperation page and the Register user page. This bug is also reproduced on the Login page except 6 step(Look at the attachment)

User story and test case links
E.g.: "User story #53
https://home-project-engineering.atlassian.net/browse/HP-53
https://home-project-engineering.atlassian.net/browse/HP-34
https://home-project-engineering.atlassian.net/browse/HP-12
https://home-project-engineering.atlassian.net/browse/HP-15

s)

Labels to be added
"Bug", Priority ("pri: "), Severity ("severity:"), Type ("UI, "Functional"), "API" (for back-end bugs).