don't make extra calls to cloud in prefect dashboard open

[zzstoatzz]

if cloud is down (like it was for maintenance) then prefect dashboard open hangs as it tries to find your workspace, but you're using OSS this shouldn't matter and it should exit early

stacked on #16767

[codspeed-hq]

CodSpeed Performance Report

Merging #16768 will not alter performance

_{Comparing early-exit-dashboard (1e18e32) with main (e047607)}

Summary

✅ 2 untouched benchmarks

[desertaxle]

Since the prefect dashboard open command immediately opens the browser, you often don't see the final output of the command. Could we just print the UI URL in all cases to avoid API calls entirely?

[zzstoatzz]

Since the prefect dashboard open command immediately opens the browser, you often don't see the final output of the command. Could we just print the UI URL in all cases to avoid API calls entirely?

indeed i can! updated