fix(column): missing redraw with virt_lines_leftcol (#34650)

Problem:  Missing number column redraw with virt_lines_leftcol.
Solution: Set virt_line_index to -1 when skipping a virtual line.

src/nvim/drawline.c

@@ -1688,6 +1688,7 @@ int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, int col_rows, b
             break;
           }
           wlv.filler_todo--;
+          virt_line_index = -1;
           if (wlv.filler_todo == 0 && (wp->w_botfill || !draw_text)) {
             break;
           }