Python Extension and Python Environment Extension both activate when `python.useEnvironmentsExtension` defaults to false

[MichaReiser]

Environment data

Repro Steps

• Install the Python extension
• Install the Python environment extension
• Set the user configuration to:

    "workbench.enableExperiments": false,
    "python.experiments.enabled": false

Reload the window

Expected behavior

• The Python and Python environment extension agree on which extension is responsible for managing environments

Actual behavior

• Both extensions activate
• I see two Python selectors
• The Select Python Environment selector from the Python Environment extension is missing

Additional context

The Python Environment Extension uses inspect to decide whether useEnvironmentsExtension is set to false, but this does not take into account a default value.

The when condition of the Command Palette entry uses when, which takes default values into account

The Python Extension uses get, which takes default values into account

This came up in astral-sh/ty-vscode#551 because it's now unclear which extension ty should consider as being authoritative when it comes to selecting an environment.

[edvilme]

Hello, thanks for creating this issue. For further context can you please share the versions of the extensions you are using?