Do not generate generic signature for SAM wrapper methods

#KT-23870 Fixed

compiler/testData/codegen/box/reflection/genericSignature/delegatedMembers.kt

@@ -0,0 +1,32 @@
+// TARGET_BACKEND: JVM
+// WITH_RUNTIME
+// FILE: J.java
+
+import java.util.*;
+
+public interface J<T extends Number> {
+    T foo(List<T> p0, Map<T, ? extends Set<T>> p1);
+}
+
+// FILE: K.kt
+
+import kotlin.test.assertEquals
+
+object O : J<Long> {
+    override fun foo(p0: List<Long>, p1: Map<Long, out Set<Long>>): Long = 42L
+}
+
+class A : J<Long> by O
+
+fun box(): String {
+    val m = A::class.java.getDeclaredMethod("foo", List::class.java, Map::class.java)
+    assertEquals(
+        "[interface java.util.List, interface java.util.Map]",
+        m.parameterTypes.contentToString()
+    )
+    assertEquals(
+        "[java.util.List<java.lang.Long>, java.util.Map<java.lang.Long, ? extends java.util.Set<java.lang.Long>>]",
+        m.genericParameterTypes.contentToString()
+    )
+    return "OK"
+}