fix: add missing platformType=AI for plugin verifier

Author: z8dn

gradle.properties

@@ -11,6 +11,7 @@ pluginSinceBuild = 261
 
 # IntelliJ Platform Properties -> https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html#configuration-intellij-extension
 # Android Studio Quail 1 | 2026.1.1 Canary 1 (Released Apr 16, 2026)
+platformType = AI
 platformVersion = 2026.1.1.1
 
 # Plugin Dependencies -> https://plugins.jetbrains.com/docs/intellij/plugin-dependencies.html