Tie domain blocking to cosmetic filtering instead of ad blocking

[pilgrim-brave]

Resolves brave/brave-browser#15242

Submitter Checklist:

• I confirm that no security/privacy review is needed, or that I have requested one
• There is a ticket for my issue
• Used Github auto-closing keywords in the PR description above
• Wrote a good PR/commit description
• Added appropriate labels (QA/Yes or QA/No; release-notes/include or release-notes/exclude; OS/...) to the associated issue
• Checked the PR locally: npm run test -- brave_browser_tests, npm run test -- brave_unit_tests, npm run lint, npm run gn_check, npm run tslint
• Ran git rebase master (if needed)

Reviewer Checklist:

• A security review is not needed, or a link to one is included in the PR description
• New files have MPL-2.0 license header
• Adequate test coverage exists to prevent regressions
• Major classes, functions and non-trivial code blocks are well-commented
• Changes in component dependencies are properly reflected in gn
• Code follows the style guide
• Test plan is specified in PR before merging

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, 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-Exceptions-in-Brave
  • https://github.com/brave/brave-browser/wiki/QA-Guide
  • https://github.com/brave/brave-browser/wiki/P3A

Test Plan:

[kjozwiak]

Verification PASSED on Win 10 x64 using the following build:

Brave | 1.25.16 Chromium: 90.0.4430.70 (Official Build) nightly (64-bit)
-- | --
Revision | 3954de7175366f3b7edca576f140dfa273e6b5ae-refs/branch-heads/4430@{#1210}
OS | Windows 10 OS Version 2009 (Build 19042.906)

• ensured that --force-fieldtrials="*BraveDomainBlockStudy/Disabled/ wasn't being pulled/used by Griffen by checking brave://version/?show-variations-cmd

Initial Launch	Restarted Several Times

Used checked 1-1ads.com, actionsplash.com & pub.chez.com for the following cases:

• ensured that selecting Trackers & ads blocked (aggressive) correctly enabled Top Level Domain blocking and displayed the expected interstitial page
• ensured that setting Trackers & ads blocked (aggressive) via brave://settings/shields worked without any issues
• ensured that selecting Trackers & ads blocked (standard) disabled Top Level Domain blocking and didn't display the interstitial page
• ensured that selecting Allow trackers & ads blocked disabled Top Level Domain blocking and didn't display the interstitial page

Disabled	Disabled	Disabled

Enabled	Enabled	Enabled