Monitor Dependency Feature

📑 I have found these related issues/pull requests I pasted the doc created by agent. Is this a feature that worth create a PR? #7813 🔖 Feature description This feature allows users to set a "Dependency Monitor" for each monitor. When the dependency monitor is paused, down, or under maintenance, the dependent monitor will show as "Unknown" status instead of running its check. ✔️ Solution Monitor Dependency Feature Implementation Documentation Overview This feature allows users to set a "Dependency Monitor" for each monitor. When the dependency monitor is paused, down, or under maintenance, the dependent monitor will show as "Unknown" status instead of running its check. Database Changes Migration: 2026-10-04-0000-add-monitor-dependency.js Foreign Key Behavior: • ON DELETE SET NULL: If the dependency monitor is deleted, the dependency field is automatically set to NULL • ON UPDATE CASCADE: If the dependency monitor's ID…