Sleep 1e-99s in async_block_till_done to workaround unfinished tasks

This reverts commit 5de171f714.

.github/workflows/builder.yml

@@ -10,12 +10,12 @@ on:
 
 env:
   BUILD_TYPE: core
-  DEFAULT_PYTHON: "3.14.2"
+  DEFAULT_PYTHON: "3.14.3"
   PIP_TIMEOUT: 60
   UV_HTTP_TIMEOUT: 60
   UV_SYSTEM_PYTHON: "true"
   # Base image version from https://github.com/home-assistant/docker
-  BASE_IMAGE_VERSION: "2026.01.0"
+  BASE_IMAGE_VERSION: "2026.02.0"
   ARCHITECTURES: '["amd64", "aarch64"]'
 
 jobs:

.github/workflows/ci.yaml

@@ -41,8 +41,8 @@ env:
   UV_CACHE_VERSION: 1
   MYPY_CACHE_VERSION: 1
   HA_SHORT_VERSION: "2026.3"
-  DEFAULT_PYTHON: "3.14.2"
-  ALL_PYTHON_VERSIONS: "['3.14.2']"
+  DEFAULT_PYTHON: "3.14.3"
+  ALL_PYTHON_VERSIONS: "['3.14.3']"
   # 10.3 is the oldest supported version
   # - 10.3.32 is the version currently shipped with Synology (as of 17 Feb 2022)
   # 10.6 is the current long-term-support

.github/workflows/translations.yml

@@ -10,7 +10,7 @@ on:
       - "**strings.json"
 
 env:
-  DEFAULT_PYTHON: "3.14.2"
+  DEFAULT_PYTHON: "3.14.3"
 
 jobs:
   upload:

.github/workflows/wheels.yml

@@ -17,7 +17,7 @@ on:
       - "script/gen_requirements_all.py"
 
 env:
-  DEFAULT_PYTHON: "3.14.2"
+  DEFAULT_PYTHON: "3.14.3"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref_name}}

homeassistant/core.py

@@ -962,7 +962,7 @@ class HomeAssistant:
     async def async_block_till_done(self, wait_background_tasks: bool = False) -> None:
         """Block until all pending work is done."""
         # To flush out any call_soon_threadsafe
-        await asyncio.sleep(0)
+        await asyncio.sleep(1e-99)
         start_time: float | None = None
         current_task = asyncio.current_task()
         while tasks := [