Fix improv_ble provisioning futures type (home-assistant#154530)

Author: bdraco

homeassistant/components/improv_ble/__init__.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import asyncio
 import logging
 
 from homeassistant.core import HomeAssistant, callback
@@ -15,7 +16,9 @@
 
 
 @callback
-def async_get_provisioning_futures(hass: HomeAssistant) -> dict:
+def async_get_provisioning_futures(
+    hass: HomeAssistant,
+) -> dict[str, asyncio.Future[str]]:
     """Get the provisioning futures registry, creating it if needed.
 
     This is a helper function for internal use and testing.

homeassistant/components/improv_ble/config_flow.py

@@ -296,7 +296,7 @@ async def async_step_identify(
     @asynccontextmanager
     async def _async_provision_context(
         self, ble_mac: str
-    ) -> AsyncIterator[asyncio.Future[str | None]]:
+    ) -> AsyncIterator[asyncio.Future[str]]:
         """Context manager to register and cleanup provisioning future."""
         future = self.hass.loop.create_future()
         provisioning_futures = async_get_provisioning_futures(self.hass)

homeassistant/components/improv_ble/const.py

@@ -8,7 +8,7 @@
 
 DOMAIN = "improv_ble"
 
-PROVISIONING_FUTURES: HassKey[dict[str, asyncio.Future[str | None]]] = HassKey(DOMAIN)
+PROVISIONING_FUTURES: HassKey[dict[str, asyncio.Future[str]]] = HassKey(DOMAIN)
 
 # Timeout in seconds to wait for another integration to register a next flow
 # after successful provisioning (e.g., ESPHome discovering the device)