Fix incorrect Prevent Action special nodes in the scenarios, caused by incorrect import code

The fix was implemented by re-importing the legacy scenarios and re-exporting them,
then simply accepting any changes to a Prevent Action node.

rsrc/scenarios/busywork/out/out0~1.spec

@@ -30,7 +30,7 @@
 	sdf -1, -1
 	msg 8, -1, -1
 	pic 0, 4
-	ex1 0, -1, -1
+	ex1 1, -1, -1
 	ex2 0, -1, -1
 	goto -1
 @block-move = 5

rsrc/scenarios/busywork/out/out0~2.spec

@@ -2,7 +2,7 @@
 	sdf -1, -1
 	msg -1, -1, -1
 	pic 0, 4
-	ex1 0, -1, -1
+	ex1 1, -1, -1
 	ex2 0, -1, -1
 	goto 1
 @once-dlog = 1

rsrc/scenarios/busywork/towns/town0.spec

@@ -30,7 +30,7 @@
 	sdf -1, -1
 	msg -1, -1, -1
 	pic 0, 4
-	ex1 0, -1, -1
+	ex1 1, -1, -1
 	ex2 0, -1, -1
 	goto 5
 @if-sdf = 5

rsrc/scenarios/busywork/towns/town2.spec

@@ -86,7 +86,7 @@
 	sdf -1, -1
 	msg -1, -1, -1
 	pic 0, 4
-	ex1 0, -1, -1
+	ex1 1, -1, -1
 	ex2 0, -1, -1
 	goto -1
 @once-disp-msg = 13