Fix S and T mixed build OTA

When a device has vendor partitions in S and system partitions in T, ota
package will enable VABC XOR. But device's snapuserd actually doesn't
support XOR, because snapuserd is in vendor partition. Therefore, at
runtime, check if XOR is supported.

Test: th
Bug: 227614163

Change-Id: I4cb84aa9b69ff872f5de7a5e9c5ca1e3405d2d8b
diff --git a/common/dynamic_partition_control_stub.cc b/common/dynamic_partition_control_stub.cc
index dd30a8b..6283b1d 100644
--- a/common/dynamic_partition_control_stub.cc
+++ b/common/dynamic_partition_control_stub.cc
@@ -38,6 +38,10 @@
   return FeatureFlag(FeatureFlag::Value::NONE);
 }
 
+FeatureFlag DynamicPartitionControlStub::GetVirtualAbCompressionXorFeatureFlag() {
+  return FeatureFlag(FeatureFlag::Value::NONE);
+}
+
 bool DynamicPartitionControlStub::OptimizeOperation(
     const std::string& partition_name,
     const InstallOperation& operation,