Set Prettier as default formatter in VS Code for JSON and YAML (#154484)

.devcontainer/devcontainer.json

@@ -33,7 +33,7 @@
         "GitHub.vscode-pull-request-github",
         "GitHub.copilot"
       ],
-      // Please keep this file in sync with settings in home-assistant/.vscode/settings.default.json
+      // Please keep this file in sync with settings in home-assistant/.vscode/settings.default.jsonc
       "settings": {
         "python.experiments.optOutFrom": ["pythonTestAdapter"],
         "python.defaultInterpreterPath": "/home/vscode/.local/ha-venv/bin/python",
@@ -63,6 +63,9 @@
         "[python]": {
           "editor.defaultFormatter": "charliermarsh.ruff"
         },
+        "[json][jsonc][yaml]": {
+          "editor.defaultFormatter": "esbenp.prettier-vscode"
+        },
         "json.schemas": [
           {
             "fileMatch": ["homeassistant/components/*/manifest.json"],