KT-31295: Enable support for .ws.kts files as for scratch files

idea/testData/worksheet/multiFile/javaDepScriptRuntime/myTest/MyJavaClass.java

@@ -0,0 +1,7 @@
+package myTest;
+
+public class MyJavaClass {
+    public int test() {
+        return 1;
+    }
+}