[client] Address the remaining bot findings on PR #7398

- Login logged the active-profile-state error and returned the same cause; the
  repo's guidelines call for one or the other, and the wrapped error is the one
  that carries context. (CodeRabbit)
- `netbird up` reported a codes.Unavailable SetConfig failure as "the daemon
  refused the settings update", but that code also covers a daemon that became
  unreachable. It now reports what the daemon said without asserting why.
  (cubic-dev-ai)
- TestLogin_ChangingTheManagementURLIsRefused asserted the error and nothing
  else, while "refused before it can touch daemon state" is the contract. It now
  checks the stored management URL, the in-progress login and the active profile,
  matching its SetConfig counterpart. (cubic-dev-ai)

client/server/server.go

@@ -621,7 +621,6 @@ func (s *Server) setConfigInputFromRequest(msg *proto.SetConfigRequest) (profile
 func (s *Server) Login(callerCtx context.Context, msg *proto.LoginRequest) (*proto.LoginResponse, error) {
 	activeProf, err := s.profileManager.GetActiveProfileState()
 	if err != nil {
-		log.Errorf("failed to get active profile state: %v", err)
 		return nil, fmt.Errorf("failed to get active profile state: %w", err)
 	}