Set error messages in helix for state transition failues

It can help access the errors from the controller UI without searching server logs for segment errors or broker/server instances go into error status.

Start by tracing the Helix state-transition failure handling and the controller UI path mentioned in the issue. Determine where segment or broker/server errors are currently exposed, then verify that the relevant failure message is visible in the controller UI without consulting server logs.

Written by the indexing model from the issue text.