Replace FinalModule with IsFinalModule.

Bug: 377723687
Test: Compare generated mk and ninja files.
Change-Id: I287b5a56aebf5fed0911bf8fbfc968d7aebc0dea
diff --git a/cc/tidy.go b/cc/tidy.go
index 89bae17..5cbf8f0 100644
--- a/cc/tidy.go
+++ b/cc/tidy.go
@@ -254,7 +254,7 @@
 
 	// Collect tidy/obj targets from the 'final' modules.
 	ctx.VisitAllModules(func(module android.Module) {
-		if module == ctx.FinalModule(module) {
+		if ctx.IsFinalModule(module) {
 			collectTidyObjModuleTargets(ctx, module, tidyModulesInDirGroup, objModulesInDirGroup)
 		}
 	})