When have multiple grants, claiming one deletes the next one on the html settings page

[gdregalo]

Description

When have multiple grants, claiming one deletes the next one on the html settings page.
Please fix in branch: base-79.0.3945.116.

Steps to reproduce

1. Create a wallet.
2. Add multiple grants.
3. Open chrome://rewards and claim a grant.
4. Once completed, observe the grant you just claimed and the next one are deleted from the
   page.
5. To see the deleted (unclaimed) grant again, the page has be refreshed.

Actual result

Expected result

Claiming a grant removes only the grant which was successfully claimed.

Issue reproduces how often

Issue happens on

• Current Play Store version?
• Beta build?

Device details

• Install type (ARM, x86):
• Device (Phone, Tablet, Phablet):
• Android version:

Brave version

Website problems only

• Does the issue resolve itself when disabling Brave Shields?
• Is the issue reproducible on the latest version of Chrome?

Additional information

[gdregalo]

@ryanml please check video at:
#7498