Description

In Typography fluid fonts generator float values are directly casted to string when generating CSS variables. This respects server locale and in some languages (e.g. Polish) it will cause floating point numbers to be comma separated (see picture).

https://github.com/WordPress/gutenberg/blob/08dc545f281489c584c5f78e26b31a97e4f46952/lib/block-supports/typography.php#L412C17-L412C38

Ref: https://stackoverflow.com/questions/17587581/php-locale-dependent-float-to-string-cast

Step-by-step reproduction instructions

1. Set PHP locale to Polish

Screenshots, screen recording, code snippet

Environment info

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Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes