Add update context method to face and fingerprint HAL.

This is needed for changes that occur mid-operation and was lost
from the previous changes when switching from the single context
method to the overloaded approach.

Bug: 204584403
Test: atest VtsHalBiometricsFingerprintTargetTest VtsHalBiometricsFaceTargetTest

Change-Id: Ie917bce9de910a421e19130b6e518bd6fc85298e
diff --git a/biometrics/face/aidl/default/Session.cpp b/biometrics/face/aidl/default/Session.cpp
index 9e753e5..984a1a9 100644
--- a/biometrics/face/aidl/default/Session.cpp
+++ b/biometrics/face/aidl/default/Session.cpp
@@ -172,4 +172,8 @@
     return detectInteraction(out);
 }
 
+ndk::ScopedAStatus Session::onContextChanged(const common::OperationContext& /*context*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::biometrics::face