columns block: add support for templateLock attribute

[sque89]

What?

Add templateLock attribute and pass it into the innerBlockProps. fixes #48620

Why?

Theme developers can control the content editors abilities to create blocks with the InnerBlocks template and templateLock attribute. But currently it is not possible to reset the templateLock on a core/columns block, which prevents the editor from duplicating an existing column

How?

By adding support for the templateLock attribute to the core/columns block, the developers has a finer control over locked templates.

Testing Instructions

1. create a custom block which makes use of the InnerBlocks component
2. add templateLock: 'insert' to the InnerBlocks component
3. add a template to the InnerBlocks which contains a core/columns block with a column
4. set the templateLock attribute of the columns block to false
5. check that the column within the columns block can be duplicated

Testing Instructions for Keyboard

Screenshots or screencast

[github-actions]

👋 Thanks for your first Pull Request and for helping build the future of Gutenberg and WordPress, @sque89! In case you missed it, we'd love to have you join us in our Slack community, where we hold regularly weekly meetings open to anyone to coordinate with each other.

If you want to learn more about WordPress development in general, check out the Core Handbook full of helpful information.

[t-hamano]

Thank you for the PR, @sque89!

As far as I have tested, everything is working as expected. Personally, I think it would be good to also add e2e tests on template_lock for the column block, as is already done in the group block, but can be addressed as a follow-up PR.

The following is my test in this PR:

Apply templateLock="all" to core/columns block

• Should not be able to change the number of columns, add, delete, or move core/column block
• The UI to change the number of columns should not appear
• should not be able to insert a block inside core/column block

templateLock_all.mp4

Apply templateLock="insert" to core/columns block

• Should not be able to add, delete core/column block
• Should be able to move core/column block
• The UI to change the number of columns should not appear
• should not be able to insert a block inside core/column block

templateLock_insert.mp4

Apply templateLock="contentOnly" to core/columns block

• Should not be able to change the number of columns, add, delete, or move core/column block
• The UI to change the number of columns should not appear
• Should only be able to edit the content within core/column block

templateLock_contentOnly.mp4

Apply templateLock=false to core/columns block, Apply templateLock="insert" to parent group block

• Should not be able to delete the core/columns block in the group block
• Should be able to move the core/columns block in the group block
• In the core/columns block, all operations should be possible.

templateLock_to_group.mp4

[github-actions]

Congratulations on your first merged pull request, @sque89! We'd like to credit you for your contribution in the post announcing the next WordPress release, but we can't find a WordPress.org profile associated with your GitHub account. When you have a moment, visit the following URL and click "link your GitHub account" under "GitHub Username" to link your accounts:

https://profiles.wordpress.org/me/profile/edit/

And if you don't have a WordPress.org account, you can create one on this page:

https://login.wordpress.org/register

Kudos!