Fix OptionsFlow config_entry setter error in Home Assistant 2024.x+

In Home Assistant 2024.x and later, the OptionsFlow base class provides
config_entry as a read-only property. The previous implementation tried
to set self.config_entry in __init__, which fails with:

    AttributeError: property 'config_entry' of 'OpenHASPOptionsFlowHandler'
    object has no setter

This caused a 500 Internal Server Error when clicking the gear icon to
configure any openHASP device in the integration settings.

Fix: Remove the custom __init__ method and don't pass config_entry to the
constructor. The base class automatically provides self.config_entry.

Author: wjnelson78

custom_components/openhasp/config_flow.py

@@ -220,16 +220,12 @@ async def async_step_personalize(self, user_input=None):
     @callback
     def async_get_options_flow(config_entry):
         """Set the OptionsFlowHandler."""
-        return OpenHASPOptionsFlowHandler(config_entry)
+        return OpenHASPOptionsFlowHandler()
 
 
 class OpenHASPOptionsFlowHandler(config_entries.OptionsFlow):
     """ConfigOptions flow for openHASP."""
 
-    def __init__(self, config_entry):
-        """Initialize openHASP options flow."""
-        self.config_entry = config_entry
-
     async def async_step_init(self, user_input=None):
         """Manage the options."""
         if user_input is not None: