patch 8.2.0848: MS-Windows: the Windows terminal code has some flaws

Problem:    MS-Windows: the Windows terminal code has some flaws.
Solution:   Do not redraw the right edge of the screen.  Remove the background
            color trick.  Flush the screen output buffer often.  (Nobuhiro
            Takasaki, #5546)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    848,
 /**/
     847,
 /**/