Describe the bug

e.g. donation banner have this code:

<link
      rel="stylesheet"
      href="https://static.openfoodfacts.org/css/dist/app-ltr.css"
    />

For some languages like Arabic, we need to use app-rtl.css instead.

To Reproduce

See #6082

Expected behavior

Translated files work for both left to right and right to left languages.

Proposed solution: link to a dynamic CSS /cgi/css.pl that can use the subdomain of the page to apply the correct ltr or rtl setting of the corresponding language.

Screenshots

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Additional context

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Type of device

Browser

Browser version

No response

Number of products impacted

No response

Time per product

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