Revert "chase: invert CHASE_NO_AUTOFS and only set it where needed"

This reverts commit 490aa05ca1.

As commented https://github.com/systemd/systemd/pull/38569#discussion_r2284978273,
the commit makes autofs check bypassed. Before the commit, when
CHASE_NO_AUTOFS is set, we did not shortcut chasing paths, and refused
any autofs mount points in the path. However, with the commit, the flag
was swapped but even when CHASE_AUTOFS is unset, the autofs check may be
skipped.

To fix the issue, rather than swapping the flag, we should introduce
another flag, say CHASE_TRIGGER_AUTOFS. This revert the commit, and in a
later commit, the new flag will be introduced.

src/sysupdate/sysupdate.c

@@ -1557,7 +1557,7 @@ static int verb_components(int argc, char **argv, void *userdata) {
                 _cleanup_closedir_ DIR *d = NULL;
                 _cleanup_free_ char *p = NULL;
 
-                r = chase_and_opendir(*i, arg_root, CHASE_PREFIX_ROOT|CHASE_AUTOFS, &p, &d);
+                r = chase_and_opendir(*i, arg_root, CHASE_PREFIX_ROOT, &p, &d);
                 if (r == -ENOENT)
                         continue;
                 if (r < 0)