[legacy-framework] Remove unneeded cd message during blitz install in some cases

[max-programming]

Closes: No issue on this

This was a simple bug when used blitz new ., it has these postinstall steps.

So this simple fix removes the cd step from the array if args.name is "."

What are the changes and their implications?

Bug Checklist

• Integration test added (see test docs if needed)

Feature Checklist

• Integration test added (see test docs if needed)
• Documentation added/updated (submit PR to blitzjs.com repo)

[flybayer]

Thank you!!

[blitzjs-bot]

Added @max-programming contributions for code