Revert "[AssetAtlas] Avoid packing 1-pixel width or height asset into AssetAtlas"

This reverts commit c954e55f4f9577b096a06beaa4198f69ec185c96.
Revert "[AssetAtlas]: Fix AssetAtlas not consider all size of texture."

This reverts commit 367eb8488b5377f25640233b58010702324bffe5.