[Sync EN] Fix and factor out the SNMPv3 security parameter descriptions

[github-actions]

PR: https://github.com/php/doc-en/pull/5228 (2026-08-30)

Файлы RU для обновления

• language-snippets.ent
• reference/snmp/functions/snmp3-get.xml
• reference/snmp/functions/snmp3-getnext.xml
• reference/snmp/functions/snmp3-real-walk.xml
• reference/snmp/functions/snmp3-set.xml
• reference/snmp/functions/snmp3-walk.xml
• reference/snmp/snmp/construct.xml
• reference/snmp/snmp/setsecurity.xml