Fix for KT-5937: Receiver of javaClass-property hasn't been generated

#KT-5937 Fixed

compiler/testData/codegen/boxWithStdlib/intrinsics/kt5937.kt

@@ -0,0 +1,29 @@
+var result = "Fail"
+
+var l = 10L
+var d = 10.0
+var i = 10
+
+fun foo(): Int {
+    result = "OK"
+    return 1
+}
+
+fun box(): String {
+    val javaClass = foo().javaClass
+    if (javaClass != 1.javaClass) return "fail 1"
+
+    val lv = 3L
+    if (2L.javaClass != lv.javaClass) return "fail 2"
+    if (2L.javaClass != l.javaClass) return "fail 3"
+
+    val dv = 3.0
+    if (2.0.javaClass != dv.javaClass) return "fail 4"
+    if (2.0.javaClass != d.javaClass) return "fail 5"
+
+    val iv = 3
+    if (2.javaClass != iv.javaClass) return "fail 6"
+    if (2.javaClass != i.javaClass) return "fail 7"
+
+    return result
+}