Detect and report inner classes capturing script instance

compiler/testData/diagnostics/testsWithJvmBackend/scripts/nestedToObjectClassCapturesProperty.kts

@@ -0,0 +1,11 @@
+// !RENDER_DIAGNOSTICS_FULL_TEXT
+// TARGET_BACKEND: JVM_IR
+
+// KT-19423 variation
+val used = "abc"
+
+object Outer {
+    <!SCRIPT_CAPTURING_NESTED_CLASS!>class User {
+        val property = used
+    }<!>
+}