[core][esp32_ble][socket] Add wake_loop_threadsafe() helper for background thread wakeups (#11681)

tests/components/socket/conftest.py

@@ -0,0 +1,12 @@
+"""Configuration file for socket component tests."""
+
+import pytest
+
+from esphome.core import CORE
+
+
+@pytest.fixture(autouse=True)
+def reset_core():
+    """Reset CORE after each test."""
+    yield
+    CORE.reset()