Minor: rename js.result.out->result-js.out

This way result.out and result-js.out are closer in
a list of files (e.g. in Intellij project view).

Original commit: 642c5414a3

jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/incremental/AbstractJsProtoComparisonTest.kt

@@ -41,7 +41,7 @@ import java.io.File
 
 abstract class AbstractJsProtoComparisonTest : AbstractProtoComparisonTest<ProtoData>() {
     override fun expectedOutputFile(testDir: File): File =
-        File(testDir, "js.result.out")
+        File(testDir, "result-js.out")
                 .takeIf { it.exists() }
                 ?: super.expectedOutputFile(testDir)