Enable asset indexing.

Author: rhysrevans3

stac_fastapi/sfeos_helpers/stac_fastapi/sfeos_helpers/mappings.py

@@ -134,7 +134,7 @@ class Geometry(Protocol):  # noqa
         "id": {"type": "keyword"},
         "collection": {"type": "keyword"},
         "geometry": {"type": "geo_shape"},
-        "assets": {"type": "object", "enabled": False},
+        "assets": {"type": "object"},
         "links": {"type": "object", "enabled": False},
         "properties": {
             "type": "object",