fix(sdk test page): Add scrollbar to long player output

Author: Julien

playground/misc/misc-3-release-notes.md

@@ -2,6 +2,12 @@
 
 The CodinGame SDK is regularly updated and improved. This document lets you know what changed in the latest releases.
 
+# Next Release
+
+### 🐞 Bug fix
+
+- Improved display of player output in local test page.
+
 ## 3.3.1
 
 ### 🐞 Bug fix

runner/src/main/resources/view/test.css

@@ -257,7 +257,7 @@ button {
     flex-wrap: wrap;
     margin: -10px;
     flex: 1;
-    overflow: hidden;
+    overflow: auto;
 }
 
 .outputs-seperator {