* Remove `UV_HTTP_TIMEOUT`
See https://github.com/apache/airflow/discussions/61205.
Airflow is a large, popular project and a reference for other projects. I'd like to remove the historic use of `UV_HTTP_TIMEOUT`, that isn't required today anymore with the changes in uv. This will also benefit airflow, as broken network connections will fail much faster (either triggering a retry quicker, or reporting to the user in less than 4 x 300s = 20min)
I've kept the CLI option in the dev script to not break existing invocations, I can also remove it if you think it's safe
* Remove `--uv-http-timeout` from launchers too