fix: replace remaining Host model reference

fixtures/sample/radiosettings.json

@@ -7,8 +7,8 @@
             "cba_domains": ["cba.media"],
             "fallback_default_pool": "fallback",
             "fallback_show": null,
-            "host_image_aspect_ratio": "1:1",
-            "host_image_shape": "round",
+            "profile_image_aspect_ratio": "1:1",
+            "profile_image_shape": "round",
             "line_in_channels": {"0": "live", "1": "preprod"},
             "micro_show": null,
             "note_image_aspect_ratio": "16:9",