The ornamental design for a hairfoiltray, as shown and described.
FIG. 1 is a front perspective view of a hair foil tray showing my new design;
FIG. 2 is a rear view of the same;
FIG. 3 is a front view of the same;
FIG. 4 is a right side view of the same;
FIG. 5 is a left side view of the same;
FIG. 6 is a top view of the same;
FIG. 7 is a bottom view of the same; and,
FIG. 8 is a front perspective view of the hair foil tray, wherein the broken lines illustrate environmental structure that forms no part of the claimed design.