feat: rename all homepage posts patterns to content loop patterns

[thomasguillot]

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• Have you followed the Newspack Contributing guideline?
• Does your code follow the WordPress' coding standards and VIP Go coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

Since #2000 we have renamed the block to "Content Loop". This PR makes sure the patterns are named correctly

Note: once merged we will need to update https://help.newspack.com/publishing-and-appearance/blocks/block-patterns/

How to test the changes in this Pull Request:

1. Add a pattern to a page
2. Check if it's called correctly: "Newspack Content Loop" and "Content Loop Pattern x"

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran tests with your changes locally?

[laurelfulford]

Looks good, @thomasguillot!

I'm going to go ahead and merge this to make sure it makes it into today's alphas 🙂

[github-actions]

Hey @thomasguillot, good job getting this PR merged! 🎉

Now, the needs-changelog label has been added to it.

Please check if this PR needs to be included in the "Upcoming Changes" and "Release Notes" doc. If it doesn't, simply remove the label.

If it does, please add an entry to our shared document, with screenshots and testing instructions if applicable, then remove the label.

Thank you! ❤️

[matticbot]

🎉 This PR is included in version 4.6.0-alpha.1 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[laurelfulford]

The name in the patterns doc was already updated, so I just updated the screenshots -- feel free to replace @thomasguillot!