fix ride types subclasses (?) to be tested

bincio/extract/parsers/fit.py

@@ -132,16 +132,18 @@ def _normalise_sub_sport(value: Any) -> str | None:
         return None
     s = str(value).lower().replace(" ", "_")
     mapping = {
-        "road": "road",
-        "mountain": "mountain",
-        "gravel_cycling": "gravel",
-        "cyclocross": "gravel",
-        "indoor_cycling": "indoor",
-        "trail": "trail",
-        "track": "track",
+        "generic":           None,       # FIT default — unspecified
+        "virtual_activity":  "indoor",
+        "road":              "road",
+        "mountain":          "mountain",
+        "gravel_cycling":    "gravel",
+        "cyclocross":        "gravel",
+        "indoor_cycling":    "indoor",
+        "trail":             "trail",
+        "track":             "track",
         "cross_country_skiing": "nordic",
-        "nordic_skiing": "nordic",
-        "skate_skiing": "nordic",
-        "backcountry_skiing": "nordic",
+        "nordic_skiing":     "nordic",
+        "skate_skiing":      "nordic",
+        "backcountry_skiing":"nordic",
     }
     return mapping.get(s, s) or None