Enable paste-to-autofill for multi-field OTP verification input

Description: As a user signing in, I want to paste a full verification code into the first (or any) OTP field and have the characters automatically populate each subsequent field in order so I can verify quickly without typing each character individually. Problem: Currently, when pasting the entire verification code into the multi-field OTP form, all characters are inserted into the first field only. This requires manual re-entry for each character, slows down login, increases the chance of mistakes, and is inconsistent with common OTP UX patterns. Benefit: Faster, smoother verification flow, especially on mobile. Fewer input errors and retries. Accessibility-friendly for keyboard and assistive technology users. Aligns with user expectations from widely adopted OTP input behaviors.