refactor(redraw): no type argument in update_screen()

This was used in the past with assumption that curwin/curbuf
is "special" but this has not been true since basically forever
at this point.

Reduce NOT_VALID/CLEAR panic in options.lua . These should not
be set if an effect of the option is causing something
which by itself invokes redraw_later().

src/nvim/state.c

@@ -57,7 +57,7 @@ getkey:
       // Duplicate display updating logic in vgetorpeek()
       if (((State & MODE_INSERT) != 0 || p_lz) && (State & MODE_CMDLINE) == 0
           && must_redraw != 0 && !need_wait_return) {
-        update_screen(0);
+        update_screen();
         setcursor();  // put cursor back where it belongs
       }
       // Flush screen updates before blocking