Fix cursor movement by 'next-logical-line' after 'next-line'

Fix cursor movement by 'next-logical-line' after 'next-line'

* src/indent.c (Fvertical_motion): Adjust TO_X when line-numbers
are being displayed.  Remove unneeded "correction" of TO_X at the
goal line.

* lisp/simple.el (last--line-number-width): Remove unneeded
variable.
(line-move-visual): Account for line-number display width by
adjusting the pixel X coordinate that gets converted into
canonical columns passed to vertical-motion, instead of adjusting
temporary-goal-column (which then affects next commands, including
next-logical-line).  (Bug#31723)