The broken lines shown in the Figures represent portions of the display assembly that are unclaimed environment, boundaries, contour lines, fold lines, or a combination thereof only, that form no part of the claimed design. The broken lines consisting of evenly sized dashes depict parts of the display assembly that form no part of the claimed design. The broken lines consisting of a dash, a dot, and a dash define the bounds of the claimed design and form no part of the claimed design. All surfaces not shown form no part of the claimed design. The shade lines in the Figures show contour and not surface ornamentation. The oblique line shading in the Figures shows a transparent surface and not surface ornamentation.