Flip --incompatible_load_proto_toolchain_for_javalite_from_com_google_protobuf

Fixes #9992
Fixes #10335

Closes #10745.

PiperOrigin-RevId: 298576580
diff --git a/src/main/java/com/google/devtools/build/lib/bazel/rules/java/proto/BazelJavaLiteProtoAspect.java b/src/main/java/com/google/devtools/build/lib/bazel/rules/java/proto/BazelJavaLiteProtoAspect.java
index 636aab1..1e9e4f7 100644
--- a/src/main/java/com/google/devtools/build/lib/bazel/rules/java/proto/BazelJavaLiteProtoAspect.java
+++ b/src/main/java/com/google/devtools/build/lib/bazel/rules/java/proto/BazelJavaLiteProtoAspect.java
@@ -22,7 +22,7 @@
 public class BazelJavaLiteProtoAspect extends JavaLiteProtoAspect {
 
   public static final String DEFAULT_PROTO_TOOLCHAIN_LABEL =
-      "@com_google_protobuf_javalite//:javalite_toolchain";
+      "@com_google_protobuf//:javalite_toolchain";
 
   public BazelJavaLiteProtoAspect(RuleDefinitionEnvironment env) {
     super(BazelJavaSemantics.INSTANCE, DEFAULT_PROTO_TOOLCHAIN_LABEL, env);
diff --git a/src/main/java/com/google/devtools/build/lib/rules/proto/ProtoConfiguration.java b/src/main/java/com/google/devtools/build/lib/rules/proto/ProtoConfiguration.java
index 941638d..ba8725e 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/proto/ProtoConfiguration.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/proto/ProtoConfiguration.java
@@ -187,7 +187,7 @@
 
     @Option(
         name = "incompatible_load_proto_toolchain_for_javalite_from_com_google_protobuf",
-        defaultValue = "false",
+        defaultValue = "true",
         documentationCategory = OptionDocumentationCategory.UNDOCUMENTED,
         effectTags = {OptionEffectTag.LOADING_AND_ANALYSIS},
         metadataTags = {