tweak firefox 'download complete' needle

Rawhide changed the color of the popover outline, so exclude it
from the needle so the needle continues to work for 24/25/RH.

needles/firefox/download_complete.json

@@ -1,16 +1,16 @@
-{
-  "tags": [
-    "browser_download_complete",
-    "firefox_download_complete"
-  ],
-  "properties": [],
-  "area": [
-    {
-      "xpos": 829,
-      "ypos": 102,
-      "width": 34,
-      "height": 26,
-      "type": "match"
-    }
-  ]
+{
+    "area": [
+        {
+            "height": 19,
+            "type": "match",
+            "width": 34,
+            "xpos": 829,
+            "ypos": 102
+        }
+    ],
+    "properties": [],
+    "tags": [
+        "browser_download_complete",
+        "firefox_download_complete"
+    ]
 }