Revert "fix: stem: Remove torrc option that is the default"

This reverts commit 15da07d6.
Because it's not the default. No additional changes are needed in the
tests.

Closes #40064.
7 jobs for maint-1.1_40064 in 23 minutes and 6 seconds (queued for 50 seconds)
latest
Status Name Job ID Coverage
  Test
passed python36tor035 #13625

00:11:02

passed python36tor041 #13626

00:10:59

passed python36tor042 #13627

00:11:10

passed python36torstable #13628

00:11:15

passed python37 #13629

00:21:06

passed python38 #13630

00:11:03

passed python39 #13631

00:11:03