Make isFromJava check work for SAM adapter extension descriptors (KT-21538)

Consider all callable descriptor in JavaClassDescriptor to be from Java.

This is used to check if smart step into should be intercepted by Kotlin
handler or delegated to Java.

 #KT-21538 Fixed

idea/testData/debugger/tinyApp/src/forTests/MyJavaClass.java

@@ -49,4 +49,9 @@ public class MyJavaClass {
     public static class RawADerived extends RawA {
 
     }
+
+    // Method with sam conversion for step into test
+    public void other(Runnable runnable) {
+        runnable.run();
+    }
 }