Update the way to get output files in license_metadata

The output files from a module is obtained from OutputFilesProvider
instead of from OutputFileProducer, which is going to be
deprecated.

Test: CI
Bug: 339477385
Change-Id: I2a5488653d9ba05c7ebd5a0b452e75fcc676c893

android/license_metadata.go

@@ -45,8 +45,7 @@ func buildLicenseMetadata(ctx ModuleContext, licenseMetadataFile WritablePath) {
 	}
 
 	var outputFiles Paths
-	if outputFileProducer, ok := ctx.Module().(OutputFileProducer); ok {
-		outputFiles, _ = outputFileProducer.OutputFiles("")
+	if outputFiles, err := outputFilesForModule(ctx, ctx.Module(), ""); err == nil {
 		outputFiles = PathsIfNonNil(outputFiles...)
 	}