Add simplified ("toggle") broken site reporting

[laghee]

Task/Issue URL: https://app.asana.com/0/1201870266890790/1208769785329643/f

Description

We're implementing the simplified broken site reporting flow that already exists on other platforms here, prompting users to report site breakage on URLs where they toggle off protections.

Steps to test this PR

Toggle Reports

• Set up your local environment by checking out the privacy-dashboard branch and editing app/build.gradle to point to its location (replacing this bit).
• Navigate to any non-DuckDuckGo site and tap the privacy shield, then toggle off protections
  • Confirm that you're shown the report prompting screen
  • Click on "See what's sent" and confirm the data details expand into view
  • Tap "Send report" and confirm that the m_protection-toggled-off-breakage-report pixel is sent with reportFlow=on_protections_off_dashboard_main
• Re-enable protections
• Tap the 3-dot menu and then "Disable privacy protection"
  • Confirm that you're again shown the prompt screen
  • Tap "Send report" and confirm that the above pixel is sent with reportFlow=on_protections_off_menu
• Re-enable protections
• Toggle off protections again from either entry point and confirm that you are again show the prompt
  • Tap "Don't send"
  • Confirm that you are no longer shown the prompt from either toggle-off point (block should last 48 hours, but that value can be overridden by the remote privacy config -- there is an existing JSONblob with both intervals set to 2 minutes if you'd like to test more exhaustively, as I did)