Fix 404 Error on PO Search Page for IPP Flow

[WilliamBirdsall]

🎫 Ticket

Link to the relevant ticket:
LG-14545

🛠 Summary of changes

On the PO search page for the IPP flow, the extendSession callback was being called without a sessionURL being provided. This is due to the IPP flow being almost entirely in Ruby and not having a current session on the React side of things.

This change conditionally adds the extendSession callback only if the flow is not Opt In IPP.

📜 Testing Plan

• Step 1: Login or create a new account via the Sinatra app and begin IPP flow
• Step 2: Confirm that there is no 404 error in the network tab/console on the PO Search page

[WilliamBirdsall]

Notes:

• There may be a better way to do this instead of the throwaway noop function. The DocumentCapture component already has a noop as default for onStepChange so there may be a way to use this...
• Must ensure that extendSession still works for other flows (including hybrid). Is optedInToInPersonProofing true during hybrid? If so the conditional needs to be reworked.