[HttpFoundation] status 201 is allowed to have a body
bug #10721 [HttpFoundation] status 201 is allowed to have a body (Tobion)

This PR was merged into the 2.3 branch.

Discussion
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[HttpFoundation] status 201 is allowed to have a body

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | only if someone relied on wrong behavior
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #10673
| License       | MIT

Status 201 is allowed to have a response body.

Commits
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1761f64 [HttpFoundation] status 201 is allowed to have a body