Update name from trunk_stable_flags to aconfig flags

the name "trunk stable" is not recommended to appear in android code
base as it is an internal concept. therefore the name change.

Bug: b/295379636
Change-Id: Ice045ac00e2d4987221cc6516baa0d013e6e0943
diff --git a/private/property_contexts b/private/property_contexts
index ce97b5b..3ddc42c 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -269,7 +269,7 @@
 persist.device_config.storage_native_boot.          u:object_r:device_config_storage_native_boot_prop:s0
 persist.device_config.surface_flinger_native_boot.  u:object_r:device_config_surface_flinger_native_boot_prop:s0
 persist.device_config.swcodec_native.               u:object_r:device_config_swcodec_native_prop:s0
-persist.device_config.trunk_stable_flags.           u:object_r:device_config_trunk_stable_flags_prop:s0
+persist.device_config.aconfig_flags.                u:object_r:device_config_aconfig_flags_prop:s0
 persist.device_config.vendor_system_native.         u:object_r:device_config_vendor_system_native_prop:s0
 persist.device_config.vendor_system_native_boot.    u:object_r:device_config_vendor_system_native_boot_prop:s0
 persist.device_config.virtualization_framework_native. u:object_r:device_config_virtualization_framework_native_prop:s0