Add a missing needle for KDE graphical upgrade tests

This is the variant we hit when upgrading from Fedora 40 (the
button looks a bit different than on F39). Without it the test
for Rawhide (which upgrades from F40) will fail.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/kde/desktop_package_tool_upgrade_system-kde-20240306.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "type": "match",
+      "ypos": 88,
+      "xpos": 878,
+      "height": 20,
+      "width": 54
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "desktop_package_tool_upgrade_system"
+  ]
+}