IR: check absence of extension receiver in isMethodOfAny

Otherwise extension methods named toString/equals/hashCode were
generated incorrectly on JVM IR, which could result in
AbstractMethodError at runtime.

 #KT-45963 Fixed

compiler/testData/codegen/box/extensionFunctions/memberExtensionEqualsHashCodeToStringInInterface.kt

@@ -0,0 +1,19 @@
+interface AssertDSL {
+    infix fun Any?.equals(other: Any?) {
+        if (this != other) throw AssertionError("$this != $other")
+    }
+
+    fun Any?.toString(): String = ""
+    fun Any?.hashCode(): Int = 0
+}
+
+class C(val x: Int) : AssertDSL
+
+fun C.test(): String {
+    x equals 42
+    null.toString()
+    null.hashCode()
+    return "OK"
+}
+
+fun box(): String = C(42).test()