Payment pending message is showing up the incorrect BAT amount if there are any unreconciled ads in the previous month

[GeetaSarvadnya]

Description

Found while testing #16028

Payment pending message is showing the incorrect BAT amount if there are any unreconciled ads in the previous month

Steps to Reproduce

1. Clean profile 1.35.x
2. View a few Ads ( I have viewed 4 ads) today (31st Jan)
3. Reconcile 2 ads with server and make sure another 2 ads are not reconciled
4. Close the browser
5. Set the system clock to 1st Feb 2022
6. Relaunch the browser
7. Payment pending message is showing up the BAT amount as 0.02 BAT instead of 0.01 BAT

Actual result:

Payment pending message is showing the incorrect BAT amount if there are any unreconciled ads in the previous month

Expected result:

Payment pending message should show the BAT which is reconciled with the server

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	1.35.98 Chromium: 98.0.4758.74 (Official Build) (64-bit)
Revision	d0fe1ec4df090cd3eb02b591228505e12ea476e9-refs/branch-heads/4758@{#935}
OS	Windows 10 Version 21H2 (Build 19044.1466)

Version/Channel Information:

• Can you reproduce this issue with the current release? NA
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the nightly channel? Not sure

Other Additional Information:

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

Miscellaneous Information:

[GeetaSarvadnya]

Verification PASSED on

Brave | 1.35.99 Chromium: 98.0.4758.87 (Official Build) (64-bit)
-- | --
Revision | e4cd00f135fb4d8edc64c8aa6ecbe7cc79ebb3b2-refs/branch-heads/4758@{#1002}
OS | Windows 10 Version 21H2 (Build 19044.1466)

Broken profile

• Launched the profile (where the issue was reproducible) with 1.35.99 and confirmed that the Payment pending message is showing up the correct reconciled BAT amount of 0.01 BAT
• Confirmed previous month unreconciled ads BAT amount is carry forwarded to next month and shown in Ads panel Current earnings this month field
• Confirmed Payment pending message starts showing up from 1st to 7th Feb and reconciled BAT is shown correctly
• Confirmed Arrivinging message starts showing up from 8th to 11th Feb and reconciled BAT is shown correctly in arriving message

DB	BAT amount in payment pending message	BAT amount in arriving message

Clean profile - 1.35.99

1. Clean profile 1.35.99 (Prod env)
2. Viewed 4 NTP SI ads and 1 default ad notification
3. Confirmed estimated rewards earnings and notification count is shown as expected
4. Opened the DB and confirmed two 2 ads are reconciled with the server (0.05x2= 0.01 BAT)
5. Confirmed 3 ads are not reconciled with the server in DB
6. Closed the browser
7. Set the system date to 1st March
8. Relaunch the browser and reload the brave://rewards page
9. Confirmed that the Payment pending message is showing up the correct reconciled BAT amount of 0.01 BAT
10. Confirmed previous month unreconciled ads BAT amount is carry forwarded to next month and shown in Ads panel Current earnings this month field correctly

DB	BAT amount in payment pending message	BAT amount in arriving message