Added the release notes MD file and corresponding node entry in the TOC.html file

Author: DeepakRajSundar

ej2-asp-core-mvc/Release-notes/31.2.9.md

@@ -0,0 +1,16 @@
+---
+title: Essential Studio for ##Platform_Name## Release Notes
+description: Learn here about the controls in the Essential Studio for ##Platform_Name## 2025 Volume 3 SP2 Release - Release Notes
+platform: ej2-asp-core-mvc
+documentation: ug
+---
+
+# Essential Studio for ##Platform_Name## - v31.2.9 Release Notes
+
+{% include release-info.html date="November 12, 2025"  version="v31.2.9" %} 
+
+{% directory path: _includes/release-notes/v31.2.9 %}
+
+{% include {{file.url}} %}
+
+{% enddirectory %}