Do not overwrite a custom hyperion light name with the hostname of the server. (#8391)

Do not overwrite a custom name with the hostname of the hyperion server.
Correct comment in name() method.

Fixes #8390

homeassistant/components/light/hyperion.py

@@ -62,7 +62,7 @@ class Hyperion(Light):
 
     @property
     def name(self):
-        """Return the hostname of the server."""
+        """Return the name of the light."""
         return self._name
 
     @property
@@ -114,7 +114,8 @@ class Hyperion(Light):
         """Get the hostname of the remote."""
         response = self.json_request({'command': 'serverinfo'})
         if response:
-            self._name = response['info']['hostname']
+            if self._name == self._host:
+                self._name = response['info']['hostname']
             return True
         return False