security/xray-core: Fix runtime: remove "legacy reverse" feature

Failed to start: main: failed to load config files: [/usr/local/etc/xray-core/00_log.json /usr/local/etc/xray-core/01_api.json /usr/local/etc/xray-core/02_dns.json /usr/local/etc/xray-core/03_routing.json /usr/local/etc/xray-core/04_policy.json /usr/local/etc/xray-core/05_inbounds.json /usr/local/etc/xray-core/06_outbounds.json /usr/local/etc/xray-core/07_transport.json /usr/local/etc/xray-cor e/08_stats.json /usr/local/etc/xray-core/09_reverse.json] > common/errors: The feature "legacy reverse" has been removed and migrated to "VLESS Reverse Proxy". Please update your config(s) according to release note and documentation.

• Add daemon syslog_output_enable feature to rc.script.
• Fix build with custom (non v2ray) USER/GROUP.

PR: 298264
Approved by: Kirill Lebedev <kirill@drlebedev.com> (maintainer)
Sponsored by: UNIS Labs (vvd, commit patch)