[otbn,dv] Bug Fix of #9407
[otbn,dv] Bug Fix of #9407

This commit includes a change in state.py so that URND would step
no matter what, when we are out of PRE_EXEC state.

Signed-off-by: Canberk Topal <e6b05429a51cc3258c31cb1f7836595b60921a29@lowrisc.org>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan