…rator

…th \r\n separator (fancyweb)

This PR was merged into the 5.4 branch.

Discussion
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[HttpClient] [EventSourceHttpClient] Fix consuming SSEs with \r\n separator

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

`\r\n` separator never worked because it splits on every line because of `[\r\n]`.

Commits
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2c095d8296 [HttpClient][EventSourceHttpClient] Fix consuming SSEs with \r\n separator

* 5.4:
  fix syntax for PHP 7.2
  [Security] Fix Danish translations
  [DomCrawler] Encode html entities only if nessecary
  [Serializer] Ignore when using #[Ignore] on a non-accessor
  [Filesystem] Strengthen the check of file permissions in `dumpFile`
  [Serializer] Fix XML scalar to object denormalization
  [HttpClient][EventSourceHttpClient] Fix consuming SSEs with \r\n separator

* 5.4:
  explicitly mark nullable parameters as nullable
  fix low deps tests
  [HttpKernel] Fix datacollector caster for reference object property
  bug #51578 [Cache] always select database for persistent redis connections
  [Security] Validate that CSRF token in form login is string similar to username/password
  [validator] validated Dutch translation
  Improve dutch translations
  [Translation] Skip state=needs-translation entries only when source == target
  [HttpKernel] Ensure controllers are not lazy
  [Validator] Fill in trans-unit id 113: This URL does not contain a TLD.
  [Validator] added missing Polish translation for unit 113
  [Validator] add missing lv translation
  [HttpClient] Let curl handle transfer encoding
  [Messenger] Make Doctrine connection ignore unrelated tables on setup
  [HttpFoundation] Set content-type header in RedirectResponse
  add translations for the requireTld constraint option message
  [Serializer] Fix unexpected allowed attributes
  [FrameworkBundle] Fix registration of the bundle path to translation

* 5.4:
  Auto-close PRs on subtree-splits
  review German translation