useTextareaAutosize: onResize callback fires not only on resize

[oleksandr-hyriavets]

Clear and concise description of the problem

useTextareaAutosize has the option onResize. First of all, it is undocumented, so it's probably worth it to add it to the docs.
Then, it is called on every change of the input and textarea.

Suggested solution

• add the onResize callback to docs
• call it only when size actually changes

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[huiliangShen]

actually, useTextareaAutosize only focus on height update. so, the onResize callback need trigger only when textarea height changed!