XCCDF Mapper does not showcase full group hierarchy but just the parent

[Amndeep7]

          ![image](https://github.com/mitre/heimdall2/assets/2015821/e352b6a6-b743-48b8-af45-69872335b5a6)

multiply-nested groups only seem to show the immediate parent group's information. i feel like all levels of group information should be shown here, but am not sure how best to reflect that information such that it shows up well within heimdall. the also showcases other problems like how certain group level attributes don't get surfaced properly such as that 'value' block. probably worthwhile setting up a brief call with you/me/aaron/eugene to figure out how to handle this one.

Originally posted by @Amndeep7 in #4255 (comment)

[Amndeep7]

@candrews

[Amndeep7]

We had a discussion about this. It is fine that for now just the parent group's information is shown. Still keeping this issue open so that we can go back to it eventually.