Use uv instead of pip in development env (#113517)

.devcontainer/devcontainer.json

@@ -5,7 +5,6 @@
   "postCreateCommand": "script/setup",
   "postStartCommand": "script/bootstrap",
   "containerEnv": {
-    "DEVCONTAINER": "1",
     "PYTHONASYNCIODEBUG": "1"
   },
   "features": {
@@ -29,7 +28,9 @@
       // Please keep this file in sync with settings in home-assistant/.vscode/settings.default.json
       "settings": {
         "python.experiments.optOutFrom": ["pythonTestAdapter"],
-        "python.pythonPath": "/usr/local/bin/python",
+        "python.defaultInterpreterPath": "/home/vscode/.local/ha-venv/bin/python",
+        "python.pythonPath": "/home/vscode/.local/ha-venv/bin/python",
+        "python.terminal.activateEnvInCurrentTerminal": true,
         "python.testing.pytestArgs": ["--no-cov"],
         "editor.formatOnPaste": false,
         "editor.formatOnSave": true,