JVM_IR KT-36984 SAM wrappers are anonymous inner classes

compiler/testData/codegen/bytecodeListing/anonymousObjectInGenericFun.kt

@@ -16,3 +16,23 @@ fun <T> test() {
 
     x.foo<Any>()
 }
+
+
+class Test {
+    fun <T> test() {
+        val x = object {
+            fun <S1> foo() {}
+
+            fun <S2> S2.ext() {}
+
+            val <S3> S3.extVal
+                get() = 1
+
+            var <S4> S4.extVar
+                get() = 1
+                set(value) {}
+        }
+
+        x.foo<Any>()
+    }
+}