Change default face sensorId to 4

Fixes: 174816040
Test: atest CtsBiometricsTestCases
Change-Id: Ib3139dd10752f488ac9da220e8ab5d9104279d0f
diff --git a/biometrics/face/aidl/default/Face.cpp b/biometrics/face/aidl/default/Face.cpp
index d3883d6..773359e 100644
--- a/biometrics/face/aidl/default/Face.cpp
+++ b/biometrics/face/aidl/default/Face.cpp
@@ -19,7 +19,7 @@
 
 namespace aidl::android::hardware::biometrics::face {
 
-const int kSensorId = 0;
+const int kSensorId = 4;
 const common::SensorStrength kSensorStrength = common::SensorStrength::STRONG;
 const int kMaxEnrollmentsPerUser = 5;
 const FaceSensorType kSensorType = FaceSensorType::RGB;