Ad notifications received this month should not include transaction count from server

[tmancey]

Description

Ad notifications received this month should not include transaction count from server

Steps to Reproduce

1. Cash-in confirmations in July
2. Wait for pay out in August

Actual result:

Ad notifications received this month is calculated from the transaction count from server and any unredeemed transactions

Expected result:

Ad notifications received this month should be calculated by how many ads were seen on a particular month irrespective if they were redeemed

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

0.66.99 Chromium: 75.0.3770.100 (Official Build) (64-bit)

Version/Channel Information:

• Can you reproduce this issue with the current release? Yes
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the dev channel? Yes
• 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? No
• Is the issue reproducible on the latest version of Chrome? N/A

Miscellaneous Information:

[LaurenWags]

Verified passed with

Brave	0.67.117 Chromium: 76.0.3809.62 (Official Build) (64-bit)
Revision	7b77856b3aa34d72f246d12340fc1ded8b2c0e83-refs/branch-heads/3809@{#798}
OS	Mac OS X

• Verified test plan from Fix ad notifications received this month should not include transaction count from server brave-core#2851

Verified passed with

Brave	0.67.117 Chromium: 76.0.3809.62 (Official Build) (64-bit)
Revision	7b77856b3aa34d72f246d12340fc1ded8b2c0e83-refs/branch-heads/3809@{#798}
OS	Ubuntu 18.04 LTS

• Verified test plan from Fix ad notifications received this month should not include transaction count from server brave-core#2851

Verification passed on

Brave	0.67.119 Chromium: 76.0.3809.72 (Official Build) (64-bit)
Revision	5a04c669126f657f98824b436555cae41b8f4146-refs/branch-heads/3809@{#897}
OS	Windows 10 OS Version 1803 (Build 17134.523)

• Verified test plan from Fix ad notifications received this month should not include transaction count from server brave-core#2851

• Verified the test plan on the clean profile as well as on upgraded profile