Enable --incompatible_disallow_old_style_args_add by default

Fixes https://github.com/bazelbuild/bazel/issues/5822

RELNOTES: --incompatible_disallow_old_style_args_add is enabled by default.
PiperOrigin-RevId: 235053596
diff --git a/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java b/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java
index 87ae5ce..4b01e23 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java
@@ -221,7 +221,7 @@
           .incompatibleDisallowLegacyJavaProvider(false)
           .incompatibleDisallowLegacyJavaInfo(false)
           .incompatibleDisallowLoadLabelsToCrossPackageBoundaries(false)
-          .incompatibleDisallowOldStyleArgsAdd(false)
+          .incompatibleDisallowOldStyleArgsAdd(true)
           .incompatibleDisallowStructProviderSyntax(false)
           .incompatibleExpandDirectories(true)
           .incompatibleNewActionsApi(false)