[New primitive]Tests for Transpose `R←⍉Y`

Updates to tests for Transpose will be here.

Quick help:
- Docs: https://docs.dyalog.com/20.0/language-reference-guide/primitive-functions/transpose/
- Contributing guidelines: https://github.com/Dyalog/ullu/blob/main/contributing.md

Start with the Transpose documentation linked in the issue and read contributing.md for repository guidance. Then locate the existing primitive test structure and add coverage for Transpose `R←⍉Y`; done means the relevant tests run successfully and cover the intended behavior.

Written by the indexing model from the issue text.