fix: migrate failing because options passed to clean are null

[jcassidyav]

PR Checklist

• The PR title follows our guidelines: c.
• There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it.
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• Tests for the changes are included.

What is the current behavior?

ns migrate fails with
TypeError: Cannot read properties of undefined (reading 'silent') at ProjectCleanupService.<anonymous> (/Users/jcassidy/.nvm/versions/node/v18.13.0/lib/node_modules/nativescript/lib/services/project-cleanup-service.js:25:35)

What is the new behavior?

Added null checks.

migrate works.