Ensure Python Terminal Shell Integration setting is effective without reloading

[anthonykim1]

Perhaps there are ways we can allow user to receive expected behavior depending on their settings for Python enable shell integration.
This way they wont have to refresh/reload in order to get the updated behavior.

[anthonykim1]

Verification steps(Mac and Linux ONLY):

1. Make sure you are on the latest pre-release version of Python extension.
2. Test this on Python version smaller than 3.13 (So your_python_version < 3.13.0)
3. Enable python.terminal.shellIntegration.enabled to true (check both user, workspace setting) and launch a new terminal.
4. In that newly launched terminal, open Python Terminal REPL (The one with >>>), via command palette or via typing python in your terminal.
5. Make sure you are getting shell integration in your Python REPL in Terminal (easiest giveaway is the blue,red dots)
6. Do the reverse and go from shell integration enabled to disabled for Python REPL and see your setting is effective in new terminal without having to reload.

[roblourens]

Cool!