Fix KCallable#name intrinsic for bound references

Do not skip generation of the left-hand side because it may produce side
effects

 #KT-12995 Fixed

compiler/testData/codegen/box/callableReference/bound/kCallableNameIntrinsic.kt

@@ -0,0 +1,10 @@
+// See KT-12995
+
+fun box(): String {
+    var state = 0
+    val name = (state++)::toString.name
+    if (name != "toString") return "Fail 1: $name"
+    if (state != 1) return "Fail 2: $state"
+
+    return "OK"
+}