**Arduino** Extension In Dev Container requires **C/Cpp** extension to be reinstalled

[zfields]

I've added a screenshot to illustrate that it is clearly installed. I thought perhaps it was a version mismatch, so I checked the version (v1.10.7) and it does not change after you click Install and Reload.

Thankfully, it makes itself happy when you click install and reload, so it's not a blocker.

Snippet of devcontainer.json:

    // Add the IDs of extensions you want installed when the container is created.
    "extensions": [
		"ms-vscode.cpptools",
		"twxs.cmake",
		"vsciot-vscode.vscode-arduino"
	],