Use rel_url for looking up frontend panels (#90149)

* Use rel_url for looking up frontend panels

request.url builds a new URL every time where-as
rel_url is always available

https://docs.aiohttp.org/en/stable/web_reference.html#aiohttp.web.BaseRequest.rel_url

* Use rel_url for looking up frontend panels

request.url builds a new URL every time where-as
rel_url is always available

https://docs.aiohttp.org/en/stable/web_reference.html#aiohttp.web.BaseRequest.rel_url

homeassistant/components/frontend/__init__.py

@@ -530,8 +530,9 @@ class IndexView(web_urldispatcher.AbstractResource):
         """
         if (
             request.path != "/"
-            and len(request.url.parts) > 1
-            and request.url.parts[1] not in self.hass.data[DATA_PANELS]
+            and (parts := request.rel_url.parts)
+            and len(parts) > 1
+            and parts[1] not in self.hass.data[DATA_PANELS]
         ):
             return None, set()