JVM_IR KT-43877 fix generic signatures for SAM-converted lambdas

compiler/testData/codegen/bytecodeListing/anonymousObjectInGenericFun.kt

@@ -0,0 +1,18 @@
+// WITH_SIGNATURES
+
+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>()
+}