Configure Brave Ads next payment date from variations seed

[tmancey]

No description provided.

[btlechowski]

QA/Blocked as the issue has no test plan.

[kjozwiak]

At this time we just need to make sure the next payment date matches previously releases, i.e. 5th or 6th depending on timezone. We will test the seed when we need to make a change.

@tmancey added the above case via brave/brave-core#7894. For now, we just need to make sure that the payment date matches the previous release after upgrading.

[srirambv]

Verification passed on One Plus 6T with Android 10 running 1.22.58 x64 beta build

• Verified next payment date matches previous release
• Logged "Next payment date" on Android not shown unless page is reloaded #14683 which is a known issue

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Verification passed on Samsung Tab A with Android 10 running 1.22.58 x64 beta build

• Verified next payment date matches previous release
• Encountered "Next payment date" on Android not shown unless page is reloaded #14683 which is a known issue

[btlechowski]

Verification passed on

Brave	1.22.58 Chromium: 89.0.4389.86 (Official Build) beta (64-bit)
Revision	0c2dac31bc21e806a791641316e99920f84ea52c-refs/branch-heads/4389@{#1472}
OS	Ubuntu 18.04 LTS

Verified next payment date matches previous release
Verified test plan from https://github.com/brave/internal/issues/759
Verified the date was changed to 2nd: