crecord: redraw the screen on ctrl-L
This is the normal use of Ctrl-L, so I think this is going to be what most
people expect it to do. We're keeping the adjustment of what line we're scrolled
to as well. I believe both to be necessary to handle otherwise inescapable
situations when we've got screen corruption or edge-cases during window
resizing.
Differential Revision: https://phab.mercurial-scm.org/D6130
tests: glob seconds in test-upgrade-repo.t
I had the test failing locally for me with diff showing `1.4s` instead of 0.0s
Differential Revision: https://phab.mercurial-scm.org/D6161