Remove tedbow as maintainer for Settings Tray subsystem

Thanks @tedbow for so much work getting this handy feature into core!

Note to maintainers: Ted is still a maintainer for Update Status and Layout Builder, and may also be a maintainer of a couple core-tracked modules we are desperately trying to get to beta. So he should still have perms on the channel, the core node, etc. after this issue.

xjm → credited tedbow → .

Thank you @tedbow for all you've done!

Thanks @xjm and @smustgrave

re

Fond memories (and also stressful ones!).

Indeed, I will sign-off with this fond memory from #2784443-171: Move off-canvas functionality from Settings tray module into drupal.dialog.ajax library so that other modules can use it → 😜