[Woo POS][Barcodes] Start a new cart when scanning on success screen #15870
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Description
This PR adds barcode scanning support to the payment successful screen. Scanning a barcode takes you to a new cart.
Steps to reproduce
The scanning should not work on the email receipt screen, but it will put the barcode numbers in the text field if you scan there, which we can't reasonably prevent.
Screenshots
scanning.on.payment.success.mp4
RELEASE-NOTES.txtif necessary.