13464: Unrestrict referrer hiding for top-level navigations. (uplift to 1.19.x)

[brave-builds]

Uplift of #7591
Fix brave/brave-browser#13464

Approved, please ensure that before merging:

• You have checked CI and the builds, lint, and tests all pass or are not related to your PR.
• You have tested your change on Nightly.
• The PR milestones match the branch they are landing to.

After you merge:

• The associated issue milestone is set to the smallest version that the changes is landed on.

[kjozwiak]

test-browser failed on Linux due to SearchEngineProviderP3ATest.DefaultSearchEngineP3A failing as per https://ci.brave.com/job/pr-brave-browser-pr7591_ie_referrer_cap_1.19.x-linux/1/execution/node/201/log/. However, this is a known intermittent issue as per brave/brave-browser#13057 and doesn't block uplift.

06:11:25  1 test failed:
06:11:25      SearchEngineProviderP3ATest.DefaultSearchEngineP3A (../../brave/browser/search_engines/search_engine_tracker_browsertest.cc:30)

Restarting macOS as it failed build as per https://ci.brave.com/job/pr-brave-browser-pr7591_ie_referrer_cap_1.19.x-macos/1/execution/node/154/log/. Looks like it was interrupted.

08:54:20  Sending interrupt signal to process
08:54:20  ninja: build stopped: interrupted by user.
08:54:20  script returned exit code 143

[kjozwiak]

test-browser failed on macOS due to RewardsPromotionBrowserTest.ClaimViaPanel failing as per https://ci.brave.com/job/pr-brave-browser-pr7591_ie_referrer_cap_1.19.x-macos/2/execution/node/202/log/. However, this is a known intermittent issue as per brave/brave-browser#12605 and doesn't block uplift.

19:15:45  1 test failed:
19:15:45      RewardsPromotionBrowserTest.ClaimViaPanel (../../brave/components/brave_rewards/browser/test/rewards_promotion_browsertest.cc:204)

[kjozwiak]

Uplift into 1.19.x approved after deliberating with @brave/uplift-approvers. QA has verified the PR on Nightly as per #7591 (comment).