Ensure cloud and recorder backup platforms do not have to wait for the import executor (#133907)

* Ensure cloud and recorder backup platforms do not have to wait for the import executor

partially fixes #133904

* backup.backup as well

homeassistant/components/backup/__init__.py

@@ -5,6 +5,10 @@ from homeassistant.helpers import config_validation as cv
 from homeassistant.helpers.hassio import is_hassio
 from homeassistant.helpers.typing import ConfigType
 
+# Pre-import backup to avoid it being imported
+# later when the import executor is busy and delaying
+# startup
+from . import backup  # noqa: F401
 from .agent import (
     BackupAgent,
     BackupAgentError,

homeassistant/components/cloud/__init__.py

@@ -36,7 +36,14 @@ from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import bind_hass
 from homeassistant.util.signal_type import SignalType
 
-from . import account_link, http_api
+# Pre-import backup to avoid it being imported
+# later when the import executor is busy and delaying
+# startup
+from . import (
+    account_link,
+    backup,  # noqa: F401
+    http_api,
+)
 from .client import CloudClient
 from .const import (
     CONF_ACCOUNT_LINK_SERVER,

homeassistant/components/recorder/__init__.py

@@ -28,7 +28,14 @@ from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import bind_hass
 from homeassistant.util.event_type import EventType
 
-from . import entity_registry, websocket_api
+# Pre-import backup to avoid it being imported
+# later when the import executor is busy and delaying
+# startup
+from . import (
+    backup,  # noqa: F401
+    entity_registry,
+    websocket_api,
+)
 from .const import (  # noqa: F401
     CONF_DB_INTEGRITY_CHECK,
     DOMAIN,