Opt insiders users into beta language server by default

[brettcannon]

No description provided.

[karrtikr]

Prescribed solution

We want the default channel to be "beta" when user is using "insiders".

• Check https://github.com/Microsoft/vscode-python/blob/2c7a4616e0c9c9ae14c67c501d3a2f2d5793a6da/src/client/activation/languageServer/languageServerPackageService.ts#L64

• If the user is using default configuration for setting python.analysis.downloadChannel, and python.insidersChannel is "weekly" or "daily", we return "beta" instead of returning settings.analysis.downloadChannel.

[ericsnowcurrently]

I was able to verify that "python.insidersChannel": "daily" caused the LS download channel to be "beta". I had to use a breakpoint in the debugger to do this. I would have expected to see some indication in the "Python" output channel that it the LS was being installed from the "beta" channel.

[ericsnowcurrently]

Never mind. It shows up on the "Python Language Server" output panel.