fix default value issue

[MaHmoudAlmoKdaD]

Summary:

• Added support for defaultValue in OtpInput.
• Initialized input state with defaultValue.
• Synced text state when defaultValue changes dynamically.
• Simplified useImperativeHandle (removed unused blur method).

Impact:

• Enables pre-filling OTP fields (e.g., saved codes, autofill).
• No breaking changes to existing API.
• Maintains backward compatibility and consistent behavior.