…ekas)This PR was merged into the 6.1 branch.Discussion----------[Translation] Improve LocaleSwitcher a bit| Q             | A| ------------- | ---| Branch?       | 6.1| Bug fix?      | no| New feature?  | no| Deprecations? | no| Tickets       | -| License       | MIT| Doc PR        | -Today's blog post made me review#45793. Here are changes I think would be nice doing.This is an edgy feature btw to me because it builds on mutable services. An idea that I did not submit here would be to rename LocaleSwitcher to LocaleProvider and tell ppl that need the locale to use this instead of storing the locale as a string in a property. Dunno if that'd make sense to others.Commits-------a71f328 [Translation] Improve LocaleSwitcher a bit

…leSwitcher in a class_exists call (larowlan)This PR was merged into the 6.2 branch.Discussion----------[Translation] Wrap call to \Locale::setDefault from LocaleSwitcher in a class_exists call| Q             | A| ------------- | ---| Branch?       | 6.2| Bug fix?      | yes| New feature?  | no| Deprecations? | no| Tickets       | N/a - see below| License       | MIT| Doc PR        | n/aIn#45793 a new LocaleSwitcher was added which uses the \Locale class from ext-intl.On upgrading an English only project from 5.4 to 6.2, I received the following error as we don't have the ext-intl extension```Error: Class "Locale" not found```I searched for previous PRs to add a dependency on `ext-intl` and [came across one](#49280) for the string component directing the user to install a polyfill.Should symfony/translation therefore depend on the polyfill - otherwise updating is broken without manually installing the polyfill?If so, here's a PR for that.Keep up the good work folks ❤️Commits-------c043e93 Wrap use of \Locale in a class_exists test