feat(security): Default new scripts to disabled state

[mathe00]

Enhance security by ensuring newly detected Python scripts are disabled by default. Users must explicitly enable scripts they trust before execution.

• Modify script discovery logic (updateAndSyncCommands or similar in python_executor.ts).
• When a new .py file is found (not present in plugin.settings.scriptActivationStatus), add it to the status object with a value of false.
• Ensure saveSettings is called after updating the status.
• Verify in UI that new scripts appear with the "Script Enabled" toggle off.