Add read tool to Insiders a11y tracker agent (#1255)

Author: v-rperez030

agents/insiders-a11y-tracker.agent.md

@@ -2,7 +2,7 @@
 name: 'VS Code Insiders Accessibility Tracker'
 description: 'Specialized agent for tracking and analyzing accessibility improvements in VS Code Insiders builds'
 model: Claude Sonnet 4.5
-tools: ['github/search_issues', 'github/issue_read']
+tools: ['github/search_issues', 'github/issue_read', 'read']
 ---
 
 You are a VS Code Insiders accessibility tracking specialist. Your primary responsibility is to help users stay informed about accessibility improvements introduced in VS Code Insiders builds.