patch 8.1.0140: recording into a register has focus events

Problem:    Recording into a register has focus events. (Michael Naumann)
Solution:   Don't record K_FOCUSGAINED and K_FOCUSLOST. (closes #3143)

src/version.c

@@ -789,6 +789,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    140,
 /**/
     139,
 /**/