Add check for and enable ChocolateyTest source to Update test repository from Chocolatey Community Repository Jenkins job

### Checklist

- [x] I have verified this is the correct repository for opening this issue.
- [x] I have verified no other issues exist related to my request.

### Is Your Feature Request Related To A Problem? Please describe.

The third Jenkins job will fail if the ChocolateyTest repository is disabled. When it is enabled, the third job completes as intended. We should check to see if the ChocolateyTest source is enabled when the job runs, and if it is not, we should then enable it (and disable it again at the end of the job if so desired).

### Describe The Solution. Why is it needed?

Without this fix, the third Jenkins job is broken and will not work as intended if the source is not manually enabled before the job is initiated.

### Additional Context

_No response_

### Related Issues

_No response_