cosmos skip sync rebase on current main

[maumar]

No description provided.

[roji]

@maumar if this is an attempt to work on #33756, IIRC that got stuck because of some xunit limitation around how the attribute/skipping worked; we can discuss in design (this is a test cleanup issue, not sure it's very high priority).

[maumar]

@roji I just hit that limitation as well and tried to figure out what's going on (fine when running in test explorer in vs, but not from CI or command line - skip attribute is seemingly not picked up there).
My motivation was that conflict resolution was quite painful and will get even more painful with the navigation test refactoring, so I was hoping to get it out of the way. Looks like it's not going to be that easy, so I'm inclined to abandon it for now, and deal with bad merge in the future.