use new options in trace_metatext mock

Author: archmoj

test/image/baselines/trace_metatext.png

@@ -36,7 +36,10 @@
     "font": {
       "weight": "bold",
       "style": "italic",
-      "variant": "small-caps"
+      "variant": "small-caps",
+      "textcase": "caps",
+      "decorline": "under",
+      "shadow": "auto"
     },
     "meta": {
       "global": "GrApH",