ngrok seems to think ish is solaris

When running ngrok, I get:

ngrok does not support a dynamic, color terminal UI on solaris.
Access the web interface for connection and tunnel status.

Not a huge problem, but is there a way to support this type of terminal under ish?

Start by reproducing the issue by running ngrok under ish and confirming why it reports Solaris. Investigate the terminal or platform behavior involved; done means ngrok recognizes ish appropriately and its dynamic, color terminal UI works instead of showing the Solaris fallback.

Written by the indexing model from the issue text.