Follow-up to #52889 and #52919.

Motivation / Background

This Pull Request has been created because if you currently create a new Rails Main app with the --skip-action-cable option, the generated database.yml sets up a cable database for the production environment.

Steps to repro the issue:

• Run rails new myapp --main --skip-action-cable; cd myapp
• Expected behavior: the generated database.yml does not set up a cable database.
• Actual behavior: the generated database.yml sets up a cable database:

  cable:
    <<: *default
    database: storage/production_cable.sqlite3
    migrations_paths: db/cable_migrate

Detail

This Pull Request changes the database .yml.tt templates to not set up the cable database when the --skip-action-cable is provided.

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one change. Unrelated changes should be opened in separate PRs.
• Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• Tests are added or updated if you fix a bug or add a feature.
• CHANGELOG files are updated for the changed libraries if there is a behavior change or additional feature. Minor bug fixes and documentation changes should not be included.