Only load stream when av package available (#23058)

homeassistant/components/default_config/__init__.py

@@ -4,9 +4,14 @@ try:
 except ImportError:
     av = None
 
+from homeassistant.setup import async_setup_component
+
 DOMAIN = 'default_config'
 
 
 async def async_setup(hass, config):
     """Initialize default configuration."""
-    return True
+    if av is None:
+        return True
+
+    return await async_setup_component(hass, 'stream', config)

homeassistant/components/default_config/manifest.json

@@ -15,7 +15,6 @@
     "mobile_app",
     "person",
     "script",
-    "stream",
     "sun",
     "system_health",
     "updater",