Creating a new python environment that matches another doesn't seem to create it

[Tyriar]

Testing microsoft/vscode-jupyter#13765

Repro:

1. Open a folder
2. Open a new notebook
3. Create a Conda environment for it using the latest Python version via the kernel picker
4. Repeat 3

I think what is happening is it abandons creating the environment and selects the existing one:

Consider changing:

1. Opening the progress notification that shows creating the new environment all together if it's not actually happen
2. Changing the selected environment notification to indicate it selected the existing environment
3. Change this to indicate an existing environment will be selected:
   

[karthiknadig]

Duplicate of #20027