sm8450-common: udfps: Enforce high brightness while enrolling

Change-Id: I960c78fc28ea3053527ab3bb790cc028454b222b

udfps/UdfpsHandler.cpp

@@ -145,7 +145,7 @@ class XiaomiSm8450UdfpsHander : public UdfpsHandler {
                     brightness = brightness_req.brightness;
                 }
                 LOG(DEBUG) << "brightness is: " << (int)brightness_req.brightness;
-                bool requestLowBrightness = brightness < LOW_BRIGHTNESS_THRESHHOLD;
+                bool requestLowBrightness = !enrolling && brightness < LOW_BRIGHTNESS_THRESHHOLD;
 
                 // Request HBM
                 disp_local_hbm_req req;