Fix point position after revert-buffer in tabulated-list mode

Fix point position after revert-buffer in tabulated-list mode

* lisp/emacs-lisp/tabulated-list.el (tabulated-list-print):
Don't use count-screen-lines, as it is unreliable when lines
are truncated and the region ends before a newline (the root
cause is in vertical-motion, but is very hard to fix there).
Instead, use vertical-motion directly, as the problems with
counting/not counting the newline that ends the region are not
relevant to what we need in this function, which is simply the
number of the current window line.  (Bug#37941)