move(visitor): expose underlying byte slice #19517
This is the PR contains the changes of #4773 #4774 #4775, #4680, and #4681, which modified and enhanced the visitor logic.
Note that in the SUI upstream, the PRs of the above four issues (and many more) are merged to amnn/mv-visitor-refactors
first, then the amnn/mv-visitor-refactors
is merged to the SUI main branch by #19517.