declare setupwizard_mode_prop as system_vendor_config_prop

1. declare setupwizard_mode_prop for ro.setupwizard.mode
2. that prop could be set during vendor_init, so changed prop type

Bug: 310208141
Test: boot and check if there is no sepolicy issue
Change-Id: I89246ab2c686db139cad48550b860d69a41106ff
diff --git a/private/property.te b/private/property.te
index e1b42a0..9eed4de 100644
--- a/private/property.te
+++ b/private/property.te
@@ -605,6 +605,12 @@
 neverallow {
   domain
   -init
+  -vendor_init
+} setupwizard_mode_prop:property_service set;
+
+neverallow {
+  domain
+  -init
 } setupwizard_prop:property_service set;
 
 # ro.product.property_source_order is useless after initialization of ro.product.* props.