Flip incompatible_use_toolchain_resolution_for_java_rules flag.

RELNOTES[INC]: flipped incompatible_use_toolchain_resolution_for_java_rules, see #7849

Closes #12812.

PiperOrigin-RevId: 351593322
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/PlatformOptions.java b/src/main/java/com/google/devtools/build/lib/analysis/PlatformOptions.java
index 2236f51..5d9e539 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/PlatformOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/PlatformOptions.java
@@ -172,7 +172,7 @@
 
   @Option(
       name = "incompatible_use_toolchain_resolution_for_java_rules",
-      defaultValue = "false",
+      defaultValue = "true",
       documentationCategory = OptionDocumentationCategory.UNDOCUMENTED,
       effectTags = OptionEffectTag.UNKNOWN,
       metadataTags = {