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_contexts b/private/property_contexts
index 69e4ec2..3ccc410 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -1480,6 +1480,8 @@
 ro.setupwizard.rotation_locked u:object_r:setupwizard_prop:s0 exact bool
 ro.setupwizard.wifi_on_exit    u:object_r:setupwizard_prop:s0 exact bool
 
+ro.setupwizard.mode            u:object_r:setupwizard_mode_prop:s0 exact string
+
 setupwizard.enable_assist_gesture_training                         u:object_r:setupwizard_prop:s0 exact bool
 setupwizard.feature.avoid_duplicate_tos                            u:object_r:setupwizard_prop:s0 exact bool
 setupwizard.feature.baseline_setupwizard_enabled                   u:object_r:setupwizard_prop:s0 exact bool