Fix jacoco_cli invocation

jacoco_cli --dest takes a directory, not a jar name, and assumes
an output file with the same name as the input jar in that
directory.  Rename jacoco-report-classes.jar to
jacoco-report-classes/modulename.jar, and generate to
jacoco/tmp/modulename.jar before combining to the final output file
at jacoco/modulename.jar.

Bug: 69669951
Test: m EMMA_INSTRUMENT=true
Change-Id: Ia7dd881d2819ae09dfb60a00b4c1b8396629cd9a
diff --git a/java/java.go b/java/java.go
index 106284e..24debac 100644
--- a/java/java.go
+++ b/java/java.go
@@ -929,7 +929,7 @@
 
 	specs := j.jacocoModuleToZipCommand(ctx)
 
-	jacocoReportClassesFile := android.PathForModuleOut(ctx, "jacoco", "jacoco-report-classes.jar")
+	jacocoReportClassesFile := android.PathForModuleOut(ctx, "jacoco-report-classes", jarName)
 	instrumentedJar := android.PathForModuleOut(ctx, "jacoco", jarName)
 
 	jacocoInstrumentJar(ctx, instrumentedJar, jacocoReportClassesFile, classesJar, specs)