Fix legacy redirect errors to include organization in path

[RedbackThomson]

Description of your changes

Fixes https://github.com/upbound/up/issues/484

I have:

• [x] Read and followed Upbound's contribution process.
• [x] Run make reviewable to ensure this PR is ready for review.
• [ ] Added backport release-x.y labels to auto-backport this PR, as appropriate.

How has this code been tested