claiming grant from NTP widget does not remove claim banner from brave://rewards

[LaurenWags]

Description

If you claim a grant (UGP or Ads) from the NTP widget, the panel opens to claim the grant as expected and you can successfully claim from there.

Then, if you go to brave://rewards, the claim banner is still there. Refresh of page and reopening the tab do not make the banner go away.

Steps to Reproduce

1. Clean profile (staging)
2. Enable rewards.
3. On widget, claim the UGP grant.
4. Panel opens, complete captcha. Close successful message.
5. Go to brave://rewards page.

Actual result:

below is an example using Ad grant, but same thing happens for UGP grant:

If you attempt to claim from this banner and complete captcha, you get this:

Expected result:

Once Ad or UGP grant is claimed, banner should not be shown on brave://rewards page

Reproduces how often:

easily

Brave version (brave://version info)

Brave	0.73.55 Chromium: 78.0.3904.87 (Official Build) nightly (64-bit)
Revision	20c21f4010010f32462ea8e1d6af30cef66d48c8-refs/branch-heads/3904@{#840}
OS	macOS Version 10.13.6 (Build 17G5019)

Version/Channel Information:

• Can you reproduce this issue with the current release? n/a
• Can you reproduce this issue with the beta channel? n/a
• Can you reproduce this issue with the dev channel? n/a
• Can you reproduce this issue with the nightly channel? yes

Other Additional Information:

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

Miscellaneous Information:

cc @mandar-brave @ryanml @brave/legacy_qa

[LaurenWags]

Note - Issue does not reproduce with the following STR (bypassing NTP widget entirely):

1. Clean profile (staging)
2. Enable Rewards (used panel)
3. Saw BAT logo notification about UGP grant, clicked on BAT logo.
4. Clicked on 'Claim' button on panel notification
5. Completed captcha, got successful message. Closed successful message.
6. Navigated to brave://rewards page
   --> no claim banner notification

[mandar-brave]

@NejcZdovc seems duplicate of the issue we were observing on iOS.
if there is a PR to fix that, that may fix the redundant grant claim issue.

[NejcZdovc]

@mandar-brave this is a different issue as here we have old logic, where iOS has VG

[btlechowski]

Verification passed on

Brave	1.3.50 Chromium: 79.0.3945.56 (Official Build) nightly (64-bit)
Revision	73cc6bf591f792b99f8fc7cdfb8addedbd084bf8-refs/branch-heads/3945@{#788}
OS	Ubuntu 18.04 LTS

Verified test plan from the description.

Verification passed on

Brave	1.3.87 Chromium: 79.0.3945.117 (Official Build) beta (64-bit)
Revision	04f0a055010adab4484f7497fbfdbf312c307f1d-refs/branch-heads/3945@{#1019}
OS	Windows 10 OS Version 1803 (Build 17134.1006)

Verified test plan from the description.
Claim UGP grants from widget:

Claim Ad grants from widget:

Verification PASSED on macOS 10.15.2 x64 using the following build:

Brave	1.3.91 Chromium: 79.0.3945.117 (Official Build) beta (64-bit)
Revision	04f0a055010adab4484f7497fbfdbf312c307f1d-refs/branch-heads/3945@{#1019}
OS	macOS Version 10.15.2 (Build 19C57)

• ensured that the UGP notification isn't being displayed under brave://rewards when accepting the grant using the rewards widget via brave://newtab
• ensured that the UGP notification isn't being displayed under the rewards widget via brave://newtabwhen accepting the grant using brave://rewards
• Went through the above cases with both UGP & Ad grants and ensured the correct notifications were being dismissed in both the rewards widget and brave://rewards