[lldb] Avoid unnecessary statusline redraw in HandleProgressEvent

There's no need to call RedrawStatusline from HandleProgressEvent. The
statusline gets redraw after handling all events, including progress
events, in the default event handler loop.

(cherry picked from commit 618e8b9)

Author: JDevlieghere

lldb/source/Core/Debugger.cpp

@@ -2212,8 +2212,6 @@ void Debugger::HandleProgressEvent(const lldb::EventSP &event_sp) {
       m_progress_reports.push_back(progress_report);
     }
   }
-
-  RedrawStatusline();
 }
 
 std::optional<Debugger::ProgressReport>