extend grid-system-stable polygon to the extent of spatial-pdf-ceus (catalog v8) bounds

stable-crust/grid/features/grid-system-stable.geojson

@@ -51,8 +51,10 @@
       [-104.50, 31.70],
       [-102.35, 29.85],
       [ -98.65, 23.95],
-      [ -65.95, 23.95],
-      [ -65.95, 50.05],
+      [ -98.13, 22.95],
+      [ -59.95, 22.95],
+      [ -59.95, 53.05],
+      [-116.00, 53.05],
       [-114.10, 50.05]
     ]]
   },