patch 8.2.2366: when using ":sleep" the cursor is always displayed

Problem:    When using ":sleep" the cursor is always displayed.
Solution:   Do not display the cursor when using ":sleep!". (Jeremy Lerner,
            closes #7688)
diff --git a/src/normal.c b/src/normal.c
index faf6ffb..a5f5794 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -993,7 +993,7 @@
 		// something different from CTRL-N.  Can't be avoided.
 		while ((c = vpeekc()) <= 0 && towait > 0L)
 		{
-		    do_sleep(towait > 50L ? 50L : towait);
+		    do_sleep(towait > 50L ? 50L : towait, FALSE);
 		    towait -= 50L;
 		}
 		if (c > 0)
@@ -6230,7 +6230,7 @@
      * "gs": Goto sleep.
      */
     case 's':
-	do_sleep(cap->count1 * 1000L);
+	do_sleep(cap->count1 * 1000L, FALSE);
 	break;
 
     /*