Fix capturing outer this in some cases in JVM codegen

When property initializer of some inner entity (e.g. anonymous object) contains
a reference to some outer entity (say, a property of the outer class), we need
to make sure we called "lookupInContext" on this entity's owner class, so that
"setCaptureThis" was called on the appropriate closure

 #KT-4176 Fixed

compiler/testData/codegen/box/closures/captureOuterProperty/inFunction.kt

@@ -0,0 +1,13 @@
+trait T {
+    fun result(): String
+}
+
+class A(val x: String) {
+    fun foo() = object : T {
+        fun bar() = x
+
+        override fun result() = bar()
+    }
+}
+
+fun box() = A("OK").foo().result()