Enable support for Gemini 3 Flash in Tier 2 IDEs (#59022)

Author: brian-d-ellis

data/tables/copilot/model-supported-clients.yml

@@ -64,10 +64,10 @@
 - name: Gemini 3 Flash
   dotcom: true
   vscode: true
-  vs: false
-  eclipse: false
-  xcode: false
-  jetbrains: false
+  vs: true
+  eclipse: true
+  xcode: true
+  jetbrains: true
 
 - name: Gemini 3 Pro
   dotcom: true