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.h b/biometrics/face/aidl/default/Session.h
index 0ce9e20..9db17d2 100644
--- a/biometrics/face/aidl/default/Session.h
+++ b/biometrics/face/aidl/default/Session.h
@@ -82,6 +82,8 @@
             const common::OperationContext& context,
             std::shared_ptr<common::ICancellationSignal>* out) override;
 
+    ndk::ScopedAStatus onContextChanged(const common::OperationContext& context) override;
+
   private:
     std::shared_ptr<ISessionCallback> cb_;
     std::mt19937 mRandom;