WPMU DEV - WP Defender Pro 5.1.1

Enhance: Improve cron events for AntiBot Global Firewall on multisite
Enhance: Remove manual "All headers" option and migrate to Automatic IP detection for improved compatibility and security
Enhance: Update User Agent logic with AntiBot service to better detect potential threats

Improvement: Update 404 logic with AntiBot service to better detect and mitigate potential threats
Improvement: Enhancing IP Detection in Defender to prevent blocking of server IPs

Fix: AntiBot service sync issue
Fix: AntiBot toggle behavior is inconsistent when managed on the Hub
Fix: Usage Tracking improvements