Pending verifications/Release Notes from 1.21.x Release #1

[kjozwiak]

Current list of issues that have been fixed/resolved in 1.21.x Release #1 but haven't been verified by QA as 1.21.x Release #1 was released on Desktop only:

• N/A - all issues via https://github.com/brave/brave-browser/milestone/172 have been verified

Current list of issues that are release-notes/include and need to be added into the 1.21.x Release #3 release notes:

• Filter out Drip's email tracker from URLs Filter out Drip's email tracker from URLs #8975
• When farbling canvas, farble across all channels When farbling canvas, farble across all channels #12069
• Tie the query filter to Shields status Tie the query filter to Shields status #13242
• [Android] Bottom toolbar appears in landscape mode [Android] Bottom toolbar appears in landscape mode #14254
• Attempt Uphold wallet relinking more often Attempt Uphold wallet relinking more often #14573
• Open in Browser causes shields to show up as disabled Open in Browser causes shields to show up as disabled #14645
• Specify resolver source breaks CNAME adblocking Specify resolver source breaks CNAME adblocking #14755
• Fix regression in CNAME uncloaking Fix regression in CNAME uncloaking #14756