The ornamental design for a foldable snowpusher with wheel, as shown and described.
FIG. 1 is the front view of a foldable snow pusher with wheel showing my new design;
FIG. 2 is the rear view thereof;
FIG. 3 is the top view thereof;
FIG. 4 is the left view thereof:
FIG. 5 is the right view thereof; and,
FIG. 6 is the perspective view thereof.
The broken lines in FIGS. 1-6 are included for the purpose of illustrating portions of the foldable snow pusher and form no part of the claimed design.