Fix islamic prayer times timestamp sensor (#61207)

homeassistant/components/islamic_prayer_times/sensor.py

@@ -45,10 +45,8 @@ class IslamicPrayerTimeSensor(SensorEntity):
     @property
     def native_value(self):
         """Return the state of the sensor."""
-        return (
-            self.client.prayer_times_info.get(self.sensor_type)
-            .astimezone(dt_util.UTC)
-            .isoformat()
+        return self.client.prayer_times_info.get(self.sensor_type).astimezone(
+            dt_util.UTC
         )
 
     async def async_added_to_hass(self):

tests/components/islamic_prayer_times/test_config_flow.py

@@ -5,6 +5,7 @@ import pytest
 
 from homeassistant import config_entries, data_entry_flow
 from homeassistant.components import islamic_prayer_times
+from homeassistant.components.islamic_prayer_times import config_flow  # noqa: F401
 from homeassistant.components.islamic_prayer_times.const import CONF_CALC_METHOD, DOMAIN
 
 from tests.common import MockConfigEntry