patch 8.2.4806: a mapping using <LeftDrag> does not start Select mode

Problem:    A mapping using <LeftDrag> does not start Select mode.
Solution:   When checking for starting select mode with the mouse also do this
            when there is typeahead. (closes #10249)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4806,
 /**/
     4805,
 /**/