Add main resources dependency to modules depending on main

This is needed to access the API database resource from D8/R8 calls.

Change-Id: Iae5199c046f422beea630805315210065d7aaab0
diff --git a/d8_r8/test_modules/tests_java_21/build.gradle.kts b/d8_r8/test_modules/tests_java_21/build.gradle.kts
index afc55d0..403eb85 100644
--- a/d8_r8/test_modules/tests_java_21/build.gradle.kts
+++ b/d8_r8/test_modules/tests_java_21/build.gradle.kts
@@ -28,6 +28,7 @@
   implementation(files(testbaseDepsJarTask.outputs.files.getSingleFile()))
   implementation(testbaseJavaCompileTask.outputs.files)
   implementation(mainCompileTask.outputs.files)
+  implementation(projectTask("main", "processResources").outputs.files)
 }
 
 // We just need to register the examples jars for it to be referenced by other modules.