Don't include data resources when running R8

The change https://r8-review.googlesource.com/c/r8/+/26482 made R8
process data resources by default. This is not expected for the
Android Platform build

Test: m -j PRODUCT-aosp_x86-userdebug core-oj
Change-Id: Idb17e39dae524dacf4b258c9f27be86e3179667f
diff --git a/java/dex.go b/java/dex.go
index 054a176..6445940 100644
--- a/java/dex.go
+++ b/java/dex.go
@@ -42,6 +42,7 @@
 			`rm -f "$outDict" && ` +
 			`${config.R8Cmd} -injars $in --output $outDir ` +
 			`--force-proguard-compatibility ` +
+			`--no-data-resources ` +
 			`-printmapping $outDict ` +
 			`$dxFlags $r8Flags && ` +
 			`touch "$outDict" && ` +