Include shield content settings into cookie rules (uplift to 0.70.x)

[brave-builds]

Uplift of #3690
Fixes brave/brave-browser#6464

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]

Restarting on iOS as npm run audit_deps failed as per https://staging.ci.brave.com/job/brave-browser-build-pr/job/pr3690_ie_cookie_fix_0.70.x/1/execution/node/337/log/:

14:49:41  Auditing /Users/jenkins/jenkins/workspace/d-pr_pr3690_ie_cookie_fix_0.70.x/src/brave/components/brave_sync/extension/brave-crypto
14:49:41  /Users/jenkins/jenkins/workspace/d-pr_pr3690_ie_cookie_fix_0.70.x/src/brave/components/brave_sync/extension/brave-crypto: npm audit
14:49:42  Auditing /Users/jenkins/jenkins/workspace/d-pr_pr3690_ie_cookie_fix_0.70.x/src/brave/components/brave_sync/extension/brave-sync
14:49:42  /Users/jenkins/jenkins/workspace/d-pr_pr3690_ie_cookie_fix_0.70.x/src/brave/components/brave_sync/extension/brave-sync: npm audit
14:49:58  
14:49:58  npm ERR! code ENOAUDIT
14:49:58  npm ERR! audit Your configured registry (https://registry.npmjs.org/) does not support audit requests, or the audit endpoint is temporarily unavailable.

[kjozwiak]

Uplift into 0.70.x approved after deliberating with @brave/uplift-approvers. Both CI/Jenkins and CI/Travis passed without any issues. Please make sure all the correct labels are added and the associated issue is moved into the correct milestone.