msm: camera: reqmgr: Reset the slot if it is applied

This change reset the slot when the next req is applied, it
should be caused by some exception before, we need to reset
this slot in case we applied wrong req to sub devices.

CRs-Fixed: 2949657
Change-Id: I0b5f7b1d8450ed355701090b185812fb7a6b6e06
Signed-off-by: Depeng Shao <quic_depengs@quicinc.com>