chg: v3bwfile: Stop scaling with consensus weight

because when the observed bandwidth is higher than the consensus (for
example when the relay is new or was some time down), it's limited by
the previous consensus, not allowing it to grow.

Since the size of the data to download depends also on the consensus
weight, this results on lower measured bandwidth too.

Closes #40091.
11 jobs for m12_issue40091_low_weight_02 in 38 minutes and 40 seconds (queued for 32 minutes and 9 seconds)
latest
Status Name Job ID Coverage
  Test
passed python310 #24701

00:12:51

passed python36 #24693

00:12:25

passed python37tor035 #24694

00:12:41

passed python37tor045 #24695

00:15:48

passed python37tor046 #24696

00:12:21

passed python37tormaster #24697

00:12:22

passed python37torstable #24698

00:12:26

passed python38 #24699

00:07:01

passed python39 #24700

00:12:32

 
  Deploy
passed pages #24702

00:01:00

passed pages:deploy

00:00:00