pkg/repo: Use handlers from the `Repo` instance when loading `Document`s
pkg/repo: Use handlers from the `Repo` instance when loading `Document`s

Signed-off-by: Stephen Augustus <0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33@auggie.dev>

kubernetes/enhancements,kubernetes/enhancements,kubernetes/enhancements