New default checks for mixed hierarchies

Old and new schemes

compiler/testData/compileKotlinAgainstCustomBinaries/jvmDefaultClashWithOld/library/a.kt

@@ -0,0 +1,13 @@
+package base
+
+interface Check {
+    fun test(): String {
+        return "fail";
+    }
+
+    var test: String
+        get() = "123"
+        set(value) { value.length}
+}
+
+open class CheckClass : Check