Have J2ObjcAspect advertise the ObjcProvider that it propagates.
@@ -144,6 +144,7 @@ public class J2ObjcAspect extends NativeAspectClass implements ConfiguredAspectF
.propagateAlongAttribute("runtime_deps")
.requireSkylarkProviders(SkylarkProviderIdentifier.forKey(JavaInfo.PROVIDER.getKey()))
.requireSkylarkProviders(ProtoInfo.PROVIDER.id())
+ .advertiseProvider(ImmutableList.of(ObjcProvider.SKYLARK_CONSTRUCTOR.id()))
.requiresConfigurationFragments(
AppleConfiguration.class,
CppConfiguration.class,
