The ornamental design for a packageinsert, as shown and described.
FIG. 1 is a top plan view of the present package insert;
FIG. 2 is an inverted front view of the present package insert;
FIG. 3 is a rear view of the present package insert;
FIG. 4 is a left side view of same; and,
FIG. 5 is a right side view of the package insert of FIG. 1.
The package insert is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The bottom surface of the package insert forms no part of the claim.