Fixes certificate manager branding.

[mkarolin]

Resolves brave/brave-browser#41938

Submitter Checklist:

• I confirm that no security/privacy review is needed and no other type of reviews are needed, or that I have requested them
• There is a ticket for my issue
• Used Github auto-closing keywords in the PR description above
• Wrote a good PR/commit description
• Squashed any review feedback or "fixup" commits before merge, so that history is a record of what happened in the repo, not your PR
• 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 wiki
  • npm run presubmit wiki, 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/Web-Compatibility-Exceptions-in-Brave
  • https://github.com/brave/brave-browser/wiki/QA-Guide
  • https://github.com/brave/brave-browser/wiki/P3A

Test Plan:

• Please, verify with STRs in the issue
• Additionally, please, verify that WebUIs didn't regress in showing Brave toolbar on pages such as brave://settings, brave://history, brave://extensions, and any others that you can think of that show the toolbar.

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[fallaciousreasoning]

lgtm % nits

Thanks for doing that @mkarolin - it's much cleaner now 😄

[cdesouza-chromium]

LGTM

[bsclifton]

string reviewers ++

[brave-builds]

Released in v1.75.33

[GeetaSarvadnya]

Verification PASSED on

Brave | 1.75.33 Chromium: 131.0.6778.69 (Official Build) nightly (64-bit)
-- | --
Revision | 023382faa9de31889a4a866e4b1e04614146cb79
OS | Windows 10 Version 22H2 (Build 19045.5131)

• Verified the STR from CR131 - brave://certificate-manager/crscerts is inherited from CR131 and there is a branding issue and click on learn more redirects to chrome page brave-browser#41938 (comment)

• Confirmed that chrome logo is removed from the Brave Root Store option via brave://certificate-manager/crscerts
  

• Confirmed that click on Learn more link via brave://certificate-manager/crscerts redirects to https://github.com/brave/brave-browser/wiki/TLS-Policy#root-store

Example	Example