fix: Legacy redirect for invalid coupon do not allow continuation of checkout process

[NoyanAziz]

…acysystem

⛔️ MAIN BRANCH WARNING! 2U EMPLOYEES must make branches against the 2u/main BRANCH

• I have checked the branch to which I would like to merge.

⛔️ DEPRECATION WARNING

This repository is deprecated and in maintainence-only operation while we work on a replacement, please see this announcement for more information.

Although we have stopped integrating new contributions, we always appreciate security disclosures and patches sent to [email protected]

Anyone internally merging to this repository is expected to release and monitor their changes; if you are not able to do this DO NOT MERGE, please coordinate with someone who can to ensure that the changes are released.

Required Testing

• Before deploying this change, complete a purchase in the stage environment.
  (^ We can remove that manual check once REV-2624 is done and the corresponding e2e test runs again)

Description

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[NawfalAhmed]

LGTM

[grmartin]

Ship it