fix OpenRCT2#19398 invisible paths still cause random sprites to appear (#235)

* fix OpenRCT2#19398 invisible paths still cause random sprites to appear

* Implement Broxzier suggestion

Co-authored-by: Hielke Morsink <[email protected]>

---------

Co-authored-by: Hielke Morsink <[email protected]>

Author: spacek531

objects/official/footpath_surface/openrct2.footpath_surface.invisible.json

@@ -8,6 +8,7 @@
     "noSlopeRailings": true
   },
   "images": [
+    "",
     "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", ""
   ],
   "strings": {