Decimal separator

Hi again @geminilabs, I would like to know if there is a way to embed setlocale(LC_ALL, ‘fr_FR’) somewhere, For makes the decimals separators are in french, (comma vs dot). I tried :

add_filter('site-reviews/summary/value/rating', function ($value, $tag) {
setlocale(LC_ALL, 'fr_FR'); return sprintf('%s', $value, $tag->review->rating);
}, 10, 2);

But without success ! ??

Can you maybe help me? Thanks

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