In Network Quality Estimator (NQE), we should experiment with
capping the value of the Effective Connection Type (ECT) when
the signal strength is low.

Currently, NQE computes ECT based on the observed RTT of the network traffic. However, when the signal strength is low, the packets on network may take too long to return back. This may cause RTT values and the computed ECT values to be not updated fast enough.

Using cellular signal strength to cap the ECT value may help us in detecting slower connections faster without waiting for enough RTT observations to be accumulated.