🐛 Bug Report

According to #1094, SegmentEncoderTransform has problems with working on subset of segments and given uncomprehensive error if new segments are met.

Expected behavior

• SegmentEncoderTransform works fine on subset of segments.
• SegmentEncoderTransform gives understandable error message if new segments are met.

To make this we should avoid using self._le.classes_ and use segments present in df instead.

How To Reproduce

Run #1094.

Environment

No response

Additional context

No response

Checklist

• Bug appears at the latest library version