Add border.radiusSizes to theme-i18n.json

[t-hamano]

• Related WordPress core ticket: https://core.trac.wordpress.org/ticket/64333
• Related WordPress dev note: https://make.wordpress.org/core/2025/11/12/theme-json-border-radius-presets-support-in-wordpress-6-9/

WordPress 6.9 introduces a new border.radiusSizes key in theme.json to define border-radius presets.

I have submitted this PR to make these preset names translatable in the make-pot command.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[swissspidy]

Thanks. Please note we have automation in place nowadays to handle this:

i18n-command/.github/workflows/update-schemas.yml

Lines 22 to 77 in 94f72dd

	update-schemas: #----------------------------------------------------------
	name: Update i18n schema fallback files
	runs-on: ubuntu-latest
	steps:
	- name: Check out source code
	uses: actions/checkout@v6
	- name: Configure git user
	run: |
	git config --global user.email "info@wp-cli.org"
	git config --global user.name "wp-make-coffee"
	- name: Check if remote branch exists
	run: echo "REMOTE_BRANCH_EXISTS=$([[ -z $(git ls-remote --heads origin update-schemas) ]] && echo "0" || echo "1")" >> $GITHUB_ENV
	- name: Create branch to base pull request on
	if: env.REMOTE_BRANCH_EXISTS == 0
	run: |
	git checkout -b update-schemas
	- name: Fetch existing branch to add commits to
	if: env.REMOTE_BRANCH_EXISTS == 1
	run: |
	git fetch --all --prune
	git checkout update-schemas
	git pull --no-rebase
	- name: Download latest schema files
	run: |
	curl -s https://develop.svn.wordpress.org/trunk/src/wp-includes/theme-i18n.json -o assets/theme-i18n.json
	curl -s https://develop.svn.wordpress.org/trunk/src/wp-includes/block-i18n.json -o assets/block-i18n.json
	- name: Check if there are changes
	run: echo "CHANGES_DETECTED=$([[ -z $(git status --porcelain) ]] && echo "0" || echo "1")" >> $GITHUB_ENV
	- name: Commit changes
	if: env.CHANGES_DETECTED == 1
	run: |
	git add assets/theme-i18n.json
	git add assets/block-i18n.json
	git commit -m "Update schema fallback files - $(date +'%Y-%m-%d')"
	git push origin update-schemas
	- name: Create pull request
	if: |
	env.CHANGES_DETECTED == 1 &&
	env.REMOTE_BRANCH_EXISTS == 0
	uses: repo-sync/pull-request@v2
	with:
	source_branch: update-schemas
	destination_branch: ${{ github.event.repository.default_branch }}
	github_token: ${{ secrets.GITHUB_TOKEN }}
	pr_title: Update schema fallback files
	pr_body: "**This is an automated pull-request**\n\nRefreshes the i18n schema files with the latest changes from core.\n\nThese are only used as a fallback if they can't be accessed directly."
	pr_reviewer: swissspidy
	pr_label: scope:distribution

These file updates aren't usually necessary anyway as they are just fallbacks for when we can't fetch the file from SVN for whatever reason.

[swissspidy]

Yeah that test will fail until the change is merged in core.

[t-hamano]

Should I update the tests in this PR after the changes are committed in core?

[swissspidy]

Sure, why not :) You already wrote them, so can't hurt :)