Cannot switch to the code from the Visualizer for a basic automation with no error

[azinneera]

Description

When an automation artifact is added without the return error, I cannot switch to the code from the Visualizer since there are no nodes in the automation diagram.

Also, the log import is not removed, and so there is an error in the automation.bal

Steps to Reproduce

1. Go to Add artifact
2. Select Automation, expand Advance Configurations, and untick the Return Error checkbox.
3. Try to switch to the source code from the diagram

Version

5.0.4

Environment Details (with versions)

No response