Raise ConfigEntryAuthFailed during setup or coordinator update to start reauth (#48962)

homeassistant/exceptions.py

@@ -98,14 +98,26 @@ class ConditionErrorContainer(ConditionError):
             yield from item.output(indent)
 
 
-class PlatformNotReady(HomeAssistantError):
+class IntegrationError(HomeAssistantError):
+    """Base class for platform and config entry exceptions."""
+
+    def __str__(self) -> str:
+        """Return a human readable error."""
+        return super().__str__() or str(self.__cause__)
+
+
+class PlatformNotReady(IntegrationError):
     """Error to indicate that platform is not ready."""
 
 
-class ConfigEntryNotReady(HomeAssistantError):
+class ConfigEntryNotReady(IntegrationError):
     """Error to indicate that config entry is not ready."""
 
 
+class ConfigEntryAuthFailed(IntegrationError):
+    """Error to indicate that config entry could not authenticate."""
+
+
 class InvalidStateError(HomeAssistantError):
     """When an invalid state is encountered."""