Handle race condition in harmony setup (#33611)

* Handle race condition in harmony setup

If the remote was discovered via ssdp before the yaml config import
happened, the unique id would already be set and the import
would abort.

* Update homeassistant/components/harmony/config_flow.py

Co-Authored-By: Paulus Schoutsen <[email protected]>

* reduce

* black

Co-authored-by: Paulus Schoutsen <[email protected]>

Author: bdraco

homeassistant/components/harmony/config_flow.py

@@ -128,8 +128,11 @@ async def async_step_link(self, user_input=None):
 
     async def async_step_import(self, validated_input):
         """Handle import."""
-        await self.async_set_unique_id(validated_input[UNIQUE_ID])
+        await self.async_set_unique_id(
+            validated_input[UNIQUE_ID], raise_on_progress=False
+        )
         self._abort_if_unique_id_configured()
+
         # Everything was validated in remote async_setup_platform
         # all we do now is create.
         return await self._async_create_entry_from_valid_input(
@@ -149,14 +152,8 @@ async def _async_create_entry_from_valid_input(self, validated, user_input):
         # Options from yaml are preserved, we will pull them out when
         # we setup the config entry
         data.update(_options_from_user_input(user_input))
-        return self.async_create_entry(title=validated[CONF_NAME], data=data)
 
-    def _host_already_configured(self, user_input):
-        """See if we already have a harmony matching user input configured."""
-        existing_hosts = {
-            entry.data[CONF_HOST] for entry in self._async_current_entries()
-        }
-        return user_input[CONF_HOST] in existing_hosts
+        return self.async_create_entry(title=validated[CONF_NAME], data=data)
 
 
 def _options_from_user_input(user_input):