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Bad confirmation error when saving ad in 30-day ads history

See original GitHub issue

Follow up to https://github.com/brave/brave-browser/issues/16005

Steps to Reproduce

Clean profile
Enable rewards and ads on staging
View a notification ad
Open 30-day ads history from brave://rewards
Save the ad
Check logs

note: also reproducible on production

Actual result:

Bad confirmation error in logs

[28698:28698:0203/024945.190057:VERBOSE1:redeem_unblinded_token.cc(55)] Redeem unblinded token
[28698:28698:0203/024945.191170:VERBOSE1:redeem_unblinded_token.cc(74)] CreateConfirmation
[28698:28698:0203/024945.191341:VERBOSE2:redeem_unblinded_token.cc(75)] POST /v2/confirmation/{confirmation_id}/{credential}
[28698:28698:0203/024945.191618:VERBOSE6:redeem_unblinded_token.cc(79)] URL Request:
  URL: https://ads-serve.bravesoftware.com/v2/confirmation/c3585488-aad6-47c7-9dc6-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
  Content: {"blindedPaymentTokens":["Hlym9G/LgCuas5ANGv/+KsobYe+4o4KieleG+fdBbXs="],"buildChannel":"beta","creativeInstanceId":"7898a259-664a-4052-8382-9c7279ae3249","payload":{},"platform":"linux","publicKey":"iMhRHf92q23NnyJJNpeyVtKbSiCRFLmKX7PQ5lrfik8=","studies":[],"type":"saved"}
  Content Type: application/json
  Method: kPost
[28698:28698:0203/024945.432845:VERBOSE1:redeem_unblinded_token.cc(90)] OnCreateConfirmation
[28698:28698:0203/024945.432899:VERBOSE6:redeem_unblinded_token.cc(92)] URL Response:
  URL: https://ads-serve.bravesoftware.com/v2/confirmation/c3585488-aad6-47c7-9dc6-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
  Response Status Code: 400
  Response: {"statusCode":400,"message":["type must be one of the following values: click, dismiss, view, landed, upvote, downvote, flag, conversion, land_30, land_60, bookmark, land_click"],"error":"Bad Request"}
[28698:28698:0203/024945.432943:VERBOSE1:redeem_unblinded_token.cc(99)] Duplicate/bad confirmation
[28698:28698:0203/024945.432970:VERBOSE1:redeem_unblinded_token.cc(118)] FetchPaymentToken
[28698:28698:0203/024945.432987:VERBOSE2:redeem_unblinded_token.cc(119)] GET /v2/confirmation/{confirmation_id}/paymentToken
[28698:28698:0203/024945.433012:VERBOSE6:redeem_unblinded_token.cc(123)] URL Request:
  URL: https://ads-serve.bravesoftware.com/v2/confirmation/c3585488-aad6-47c7-9dc6-dc033c31d81e/paymentToken
  Method: kGet
[28698:28698:0203/024945.644534:VERBOSE1:redeem_unblinded_token.cc(134)] OnFetchPaymentToken
[28698:28698:0203/024945.644745:VERBOSE6:redeem_unblinded_token.cc(136)] URL Response:
  URL: https://ads-serve.bravesoftware.com/v2/confirmation/c3585488-aad6-47c7-9dc6-dc033c31d81e/paymentToken
  Response Status Code: 404
  Response: {"error":"Confirmation does not exist","statusCode":404}
[28698:28698:0203/024945.644978:VERBOSE1:redeem_unblinded_token.cc(140)] Confirmation not found