Fixing Textarea `verticalGrow` as `auto`

[GomezIvann]

Checklist

• [x] The build process is done without errors. All tests pass in the /lib directory.
• [x] Self-reviewed the code before submitting.
• [x] Meets accessibility standards.
• [x] Added/updated documentation to /website as needed.
• [x] Added/updated tests as needed.

Description Fixed auto-resizing issues when verticalGrow was set to auto and the value was changed programmatically in the controlled variant.

Closes #1951