Have multiple bag fetches revert to subselect fetching for all but one of the bags

Description

Follow on to HHH-1413. Multiple bag fetches were simply disallowed as the resolution to that particular case in the interest of working around that issue.

The correct longer term solution is to not fetch all the bags at once, ideally reverting to subselect fetching for all but one of the bags.

Environment

None

Status

Assignee

Steve Ebersole

Reporter

Steve Ebersole

Fix versions

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backPortable

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Suitable for new contributors

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Requires Release Note

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Pull Request

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Priority

Major
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