Make "this" the implicit receiver!

test/implicit_receiver/locals_shadow_setter.wren

@@ -0,0 +1,20 @@
+class Foo {
+  bar = value {
+    IO.print("setter")
+    return value
+  }
+
+  test {
+    bar = "value" // expect: setter
+
+    {
+      bar = "value" // expect: setter
+      var bar = "local"
+      bar = "value" // no expectation
+    }
+
+    bar = "value" // expect: setter
+  }
+}
+
+(new Foo).test