Fix food tray z-index

In the pet tab, the food tray is inheriting #wrap’s negative z-index, causing it to become obscured by the footer if you scroll to the bottom of the page. Increased the z-index to 1.

“Fixing HabitRPG one line at at time”
UUID: 1322727e-9911-4ad4-aea9-a5ebd8cba826