fix: hotfix v6.85.1 to prevent creation of SGID_MyInfo storage mode forms

[wanlingt]

Problem

Add validation check for SGID_MyInfo

Tests

• 1. Create an email mode form that has SGID MyInfo as the auth type. The form should NOT have any MyInfo fields
• 2. Duplicate the form from step 1 and set it as a storage-mode form
• Go to the settings page. Under the Singpass tab, the authentication should be set to "None"