[3.3.0] Bug with object mimics in tile mode

[Nomad]

The new mimic code doesn't quite work correctly in tile mode. When detected with Treasure Location, object mimics show up as specific object flavours, as they should. But once they're in line of sight, they revert to the default tile for that type of mimic (e.g. potion mimics look like a white potion in my tile set) which causes the on-screen colour and item description to disagree, and sometimes results in an object-detected mimic changing colour in front of your eyes as you step towards it.

[Magnate]

Good catch, thanks - #1508.

[CunningGabe]

I was afraid of something like this -- I often forget that some people play with tiles, and so I don't even think to check that it works with tiles!