Reset reconcile stamp even if ac is off

[NejcZdovc]

Resolves brave/brave-browser#10006

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Verified that these changes build without errors on
  • Android
  • iOS
  • Linux
  • macOS
  • Windows
• Verified that these changes pass automated tests (unit, browser, security tests) on
  • iOS
  • Linux
  • macOS
  • Windows
• Verified that all lint errors/warnings are resolved (npm run lint)
• Ran git rebase master (if needed).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed.
• Add appropriate QA labels (QA/Yes or QA/No) to include the closed issue in milestone
• Public documentation has been updated as necessary. For instance:
  • https://github.com/brave/brave-browser/wiki/Deviations-from-Chromium-(features-we-disable-or-remove)
  • https://github.com/brave/brave-browser/wiki/Proxy-redirected-URLs
  • https://github.com/brave/brave-browser/wiki/Fingerprinting-Protections
  • https://github.com/brave/brave-browser/wiki/Brave%E2%80%99s-Use-of-Referral-Codes
  • https://github.com/brave/brave-browser/wiki/Custom-Headers
  • https://github.com/brave/brave-browser/wiki/Web-compatibility-issues-with-tracking-protection
  • https://github.com/brave/brave-browser/wiki/QA-Guide

Test Plan:

• defined in the issue

Reviewer Checklist:

• New files have MPL-2.0 license header.
• Request a security/privacy review as needed.
• Adequate test coverage exists to prevent regressions
• Verify test plan is specified in PR before merging to source

After-merge Checklist:

• The associated issue milestone is set to the smallest version that the
  changes has landed on.
• All relevant documentation has been updated.

[emerick]

LGTM, just a comment about a log typo.

[emerick]

Nit: Not really changed here, but maybe we can fix the typo: Staring -> Starting

[kjozwiak]

Reproduced the original issue using the STR outlined under brave/brave-browser#10006 using the following build:

Brave | 1.10.79 Chromium: 81.0.4044.138 (Official Build) dev (64-bit)
--- | ---
Revision | 8c6c7ba89cc9453625af54f11fd83179e23450fa-refs/branch-heads/4044@{#999}
OS | macOS Version 10.15.4 (Build 19E287)

Verification PASSED on macOS 10.15.4 x64 Catalina using the following build:

Brave | 1.11.41 Chromium: 83.0.4103.61 (Official Build) nightly (64-bit)
--- | ---
Revision | 94f915a8d7c408b09cc7352161ad592299f384d2-refs/branch-heads/4103@{#561}
OS | macOS Version 10.15.4 (Build 19E287)

Test Case #1 (original issue)

• went through the STR outlined under monthly contributions contributing again after browser restart when AC is disabled brave-browser#10006 and ensured that monthly recurring tips went through after ~5mins as per --rewards=staging=true,reconcile-interval=5
• restarted the browser and ensured that monthly occurring tips didn't occur right after the restart but occurred after ~5min as per --rewards=staging=true,reconcile-interval=5

Test Case #2 (a-c with monthly recurring tips)

• visited and added https://kjozwiakstaging.github.io & https://duckduckgo.com into the a-c table
• added https://www.3zsistemi.si & https://github.com/laurenwags into monthly recurring tips
• ensured both a-c and monthly recurring tips went through after ~5mins as per --rewards=staging=true,reconcile-interval=5

• restarted the browser and ensured that both a-c and monthly recurring tips didn't go through right after relaunch
• waited another ~5min as per --rewards=staging=true,reconcile-interval=5 and ensured that both a-c and monthly recurring tips went through without issues

Test Case #3 (a-c without monthly recurring tips)

• visited and added https://kjozwiakstaging.github.io, https://duckduckgo.com & https://laurenwags.github.io into the a-c table
• ensured both a-c and monthly recurring tips went through after ~5mins as per --rewards=staging=true,reconcile-interval=5

• restarted the browser and ensured that a-c didn't go through right after relaunch
• waited another ~5min as per --rewards=staging=true,reconcile-interval=5 and ensured that a-c went through without issues