Major Chromium bump specific checklist/items

All items may not be applicable to both Desktop and Android, but we should add a section where we check specific items for major Chromium bumps (probably to full manual pass only).

Some ideas for this include:
- context menus (various - text, links, URL bar, tab, etc)
- settings comparison, especially:
- check `brave://settings/content` -> make sure you click on `Additional content settings` and make sure there's nothing new in there (example: `Auto-verify` was added with `C117`)
- check `brave://settings/content` -> make sure you click on `Additional permissions` and make sure there's nothing new in there
- ref code check (per https://bravesoftware.slack.com/archives/C012NN4F6UU/p1695058849619809?thread_ts=1695056786.078529&cid=C012NN4F6UU) - not applicable for Linux
- on desktop this means confirming promoCode file is created and listed in brave://local-state
- on android, likely just confirming expected promoCode is listed on brave://local-state but need to confirm this

More to be added.

No file or test is identified in the issue. First review the existing major Chromium bump checklist and agree which items apply to Desktop and Android, including context menus, brave://settings/content, Additional content settings, Additional permissions, and promoCode checks in brave://local-state. Done means adding a settled full-manual-pass section with clear platform applicability.

Written by the indexing model from the issue text.