Use ConfigFlow.has_matching_flow to deduplicate webostv flows (#126898)

homeassistant/components/webostv/config_flow.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from collections.abc import Mapping
 import logging
-from typing import Any
+from typing import Any, Self
 from urllib.parse import urlparse
 
 from aiowebostv import WebOsTvPairError
@@ -92,7 +92,6 @@ class FlowHandler(ConfigFlow, domain=DOMAIN):
         """Display pairing form."""
         self._async_check_configured_entry()
 
-        self.context[CONF_HOST] = self._host
         self.context["title_placeholders"] = {"name": self._name}
         errors = {}
 
@@ -130,13 +129,16 @@ class FlowHandler(ConfigFlow, domain=DOMAIN):
         await self.async_set_unique_id(uuid)
         self._abort_if_unique_id_configured({CONF_HOST: self._host})
 
-        for progress in self._async_in_progress():
-            if progress.get("context", {}).get(CONF_HOST) == self._host:
-                return self.async_abort(reason="already_in_progress")
+        if self.hass.config_entries.flow.async_has_matching_flow(self):
+            return self.async_abort(reason="already_in_progress")
 
         self._uuid = uuid
         return await self.async_step_pairing()
 
+    def is_matching(self, other_flow: Self) -> bool:
+        """Return True if other_flow is matching this flow."""
+        return other_flow._host == self._host  # noqa: SLF001
+
     async def async_step_reauth(
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult: