Translations: improve translatable objects concept introduction #21512
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Hi,
I've started to translate a project recently. I've read the whole documentation and I've completely gone through the "Translatable Objects" section.
After I faced an issue with translating the content of objects like enumerations, and figured out the approach of the documentation about this subject was meaningless.
Then I've found this issue symfony/symfony#60049 that make me understand. So I wanted to integrate a better context for introducing the TranslatableInterface concept into the documentation itself.
I've based the branch on v6.4 as it's not a bug but it's applicable since v6.4 and before