Add build flag to enable ResourceProcessorBusyBox by default

Setting the RELEASE_USE_RESOURCE_PROCESSOR_BY_DEFAULT build flag will
change the default for use_resource_processor from false to true.

Bug: 294256649
Test: builds
Change-Id: If643bf8db9e2e039200f63f4aac226ed5b44d9e0
diff --git a/java/app.go b/java/app.go
index cb05807..894a301 100755
--- a/java/app.go
+++ b/java/app.go
@@ -588,7 +588,7 @@
 		var extraSrcJars android.Paths
 		var extraClasspathJars android.Paths
 		var extraCombinedJars android.Paths
-		if a.useResourceProcessorBusyBox() {
+		if a.useResourceProcessorBusyBox(ctx) {
 			// When building an app with ResourceProcessorBusyBox enabled ResourceProcessorBusyBox has already
 			// created R.class files that provide IDs for resources in busybox/R.jar.  Pass that file in the
 			// classpath when compiling everything else, and add it to the final classes jar.