Add "symfony/polyfill-intl-messageformatter" to Composer Dependencies

[IGLOU-EU]

Hello team,

I encountered an issue during a fresh installation where the following error message was displayed:

An exception has been thrown during the rendering of a template ("Cannot parse message translation: please install the "intl" PHP extension or the "symfony/polyfill-intl-messageformatter" package.").

Environment:

• Davis 5.x
• PHP Version: 8.3
• Hosting: Shared hosting (intl extension not available)

Proposed Solution:
To resolve this, I suggest adding "symfony/polyfill-intl-messageformatter" to the Composer dependencies. This will provide a fallback for systems where the intl PHP extension is unavailable.

Thank you.

[tchapi]

Hi @IGLOU-EU

What kind of shared hosting doesn't provide php-intl 😨 ? Can you make a PR adding the polyfill please?