Update account and limit page to pajamas compliant form error

What does this MR do and why?

Resolves #364888 (closed) and #364891 (closed)

Makes the form errors for Sign in restrictions and Account and limit pajamas compliant

Screenshots or screen recordings

Before	After

How to set up and validate locally

• Navigate to /admin/application_settings/general
• Expand Account and limit section
• Enter a negative number in Maximum export size and save
• The form error should appear
• Dismiss the top of page error banner and refresh the page to clear errors
• Expand Sign-in restrictions
• Enter a string without an https prefix to Home page URL and save
• The form error should appear

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #364888 (closed)