bugfix/1912-Support-Page-Forms-Validation

[velnachev]

Implemented dynamic form validation for each step of the support form

Closes #1912

Motivation and context

On blur validation has been disabled due to an issue caused by the initial focus on the first input field of a form step

Logic is that each step will validated on change only when it was submitted with an error from the validation schema for that step. If a user goes back to a previous step and tries to submit it again with an error that logic will again be triggered

Includes a small fix for the deprecated Hidden MUI component. Fixed as per suggestion in MUI documentation

Testing

Steps to test

1. Navigate to https://podkrepi.bg/en/support
2. Try to submit each step without selecting/filling anything
3. Observe validation behavior for each step
4. Go back to previous steps and try to submit without selecting/filling anything and observe validation behavior

Affected urls

Environment

New environment variables:

• [ ] NEW_ENV_VAR: env var details

New or updated dependencies:

Dependency name	Previous version	Updated version	Details
dependency/name	v1.0.0	v2.0.0