Add static to graceful degradation experiment

Author: prushforth

rendering-engine/leaflet-cbmt.html

@@ -31,7 +31,7 @@
       CBMTILE extent and disables the OSMTILE one; an engine that can only do
       Web Mercator gracefully degrades to the OSMTILE (EPSG:3857) extent.
     -->
-    <mapml-viewer projection="CBMTILE" zoom="3" lat="60" lon="-95" controls>
+    <mapml-viewer projection="CBMTILE" zoom="3" lat="60" lon="-95" controls controlslist="static">
       <map-layer label="Canada Base Map (projection-negotiated)" checked>
         <map-link
           rel="license"

rendering-engine/maplibre-cbmt.html

@@ -34,7 +34,7 @@
       CBMTILE extent and disables the OSMTILE one; an engine that can only do
       Web Mercator gracefully degrades to the OSMTILE (EPSG:3857) extent.
     -->
-    <mapml-viewer projection="CBMTILE" zoom="3" lat="60" lon="-95" controls>
+    <mapml-viewer projection="CBMTILE" zoom="3" lat="60" lon="-95" controls controlslist="static">
       <map-layer label="Canada Base Map (projection-negotiated)" checked>
         <map-link
           rel="license"