Allow dexopt_chroot_setup to bind-mount /system{,_ext}/lib{,64}.

See the reason in b/356858364.

Bug: 356858364
Test: m
Change-Id: Icbcde0f60df062d890034fcf4c410d5e21b01b12
diff --git a/private/dexopt_chroot_setup.te b/private/dexopt_chroot_setup.te
index 4a964fd..9e98bae 100644
--- a/private/dexopt_chroot_setup.te
+++ b/private/dexopt_chroot_setup.te
@@ -74,6 +74,7 @@
   system_data_file
   system_data_root_file
   system_file
+  system_lib_file
   tmpfs
   vendor_file
 }:dir mounton;