[PACKS] #5 Add custom request units (if any) to the confirmation email for partner requests.

[cielf]

Summary

Add custom request units (if any) to the confirmation email for partner requests.(assumes [PACKS] step-3 (#4398) is complete)

Why

This is step-5 of adding the ability to specify "packs" versus "individual" for requests

Details

Add the units (only if selected and not the default ) at the end of each description in the confirmation email for partner requests.
e.g.
Diapers Size 2 - 10 packs
Diapers Size 5 - 50

N.B.

All of the changes for PACKS must be implemented behind a flipper flag "enable_packs"

Criteria for completion

• functionality as described above
• tests that support the functionality as described above

Background

The following sections have been identified as required for the PACKS implementation. These should be implemented in numerical order.

[FelipeGithub24]

I would like to work on this one...

[github-actions]

This issue is marked as stale due to no activity within 30 days. If no further activity is detected within 7 days, it will be unassigned.

[cielf]

PR #4419 was superseded by #4421, which has been merged.