We claim the ornamental design for the work vehicle cabin, as shown and described.
FIG. 1 is a first front perspective view of a work vehicle cabin showing an embodiment of our new design;
FIG. 2 is a second front perspective view thereof;
FIG. 3 is a first rear perspective view thereof;
FIG. 4 is a second rear perspective view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a side view thereof;
FIG. 8 is an opposite side view thereof;
FIG. 9 is a top view thereof; and,
FIG. 10 is a bottom view thereof.
Only the shapes and portions bounded by solid lines form the claimed design. The elements depicted in dashed lines are shown for illustrative purpose of environment and form no part of the ornamental design.