Adjust mailbox type hints (#64051)

Co-authored-by: epenet <epenet@users.noreply.github.com>

homeassistant/components/asterisk_cdr/mailbox.py

@@ -20,7 +20,7 @@ async def async_get_handler(
     hass: HomeAssistant,
     config: ConfigType,
     discovery_info: DiscoveryInfoType | None = None,
-) -> Mailbox | None:
+) -> Mailbox:
     """Set up the Asterix CDR platform."""
     return AsteriskCDR(hass, MAILBOX_NAME)
 

homeassistant/components/asterisk_mbox/mailbox.py

@@ -23,7 +23,7 @@ async def async_get_handler(
     hass: HomeAssistant,
     config: ConfigType,
     discovery_info: DiscoveryInfoType | None = None,
-) -> Mailbox | None:
+) -> Mailbox:
     """Set up the Asterix VM platform."""
     return AsteriskMailbox(hass, ASTERISK_DOMAIN)