* 5.4:
  Fix LICENSE CI check
  fixes retrieving multiple values for extra fields
  [String] Remove duplicates in fold maps
  fail with a meaningful error when a needed package is missing
  [DependencyInjection] Fix combinatory explosion when autowiring union and intersection types
  Update license years (last time)
  [Tests] New iteration of removing `$this` occurrences in future static data providers

… `/Tests/` (OskarStark)

This PR was merged into the 6.3 branch.

Discussion
----------

[PHPUnit 10] Use `TestCase` suffix for abstract tests in `/Tests/`

| Q             | A
| ------------- | ---
| Branch?       | 6.3
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | Refs symfony/symfony#49233
| License       | MIT
| Doc PR        | n/a

Replaces #49234

Using `Test` suffix is deprecated since PHPUnit 10

Spotted in
* symfony/symfony#49233

Commits
-------

cb3db968e4 [PHPUnit 10] Use `TestCase` suffix for abstract tests in `/Tests/`

* 5.4:
  minor #49253 [PHPUnit 10] Use `TestCase` suffix for abstract tests in `/Tests/` (OskarStark)

* 5.4:
  Migrate to `static` data providers using `rector/rector`

* 5.4:
  CS fix
  Fix test provider

* 5.4:
  fix style of label containing new lines in PUML dump
  [TwigBridge] Allow floats in html5 input type number field
  [Translation] Handle the translation of empty strings
  [VarDumper] Fix error when reflected class has default Enum parameter in constructor
  [FrameworkBundle] Fix denyAccessUnlessGranted for mixed attributes
  [Validator] Fix translation of AtLeastOneOf constraint message
  [Validator] Sync IBAN formats with Swift IBAN registry
  [String] Use same alphabet for ByteString::fromRandom tests
  Fix phpdocs in components

…rrectly (claudiu-cristea)

This PR was squashed before being merged into the 5.4 branch.

Discussion
----------

[Mime] Form field values with integer keys not resolved correctly

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #47504
| License       | MIT
| Doc PR        |

This should be legit:

```
new FormDataPart([
    'qux' => [
        [
            'foo' => 'v1',
            'baz' => 'v2',
        ],
        [
            'foo' => 'v3',
            'baz' => 'v4',
    	],
    ],
]);
```

Fixes #47504

Commits
-------

923de037a6 [Mime] Form field values with integer keys not resolved correctly

* 5.4:
  [Console] Fix computing column width containing multibyte chars
  [Messenger] Fix deprecation layer of RedeliveryStamp
  [Mime] Form field values with integer keys not resolved correctly
  [Messenger] [Redis] Fixed problem where worker stops handling messages on first empty message
  [PHPUnitBridge] Fix PHPUnit 10.1 compatibility
  [VarDumper] Make the server TCP connection sync
  [Messenger] Fix warning message on failed messenger show command
  [Mailer] [Mailjet] Use body MessageID instead of X-MJ-Request-GUID
  [HttpFoundation] Fix BinaryFileResponse
  [Form] fix merge
  [HttpFoundation] Fix memory limit problems in BinaryFileResponse
  [PropertyAccess] Readonly properties must have no PropertyWriteInfo
  [Form] Cast choices value callback result to string
  [Serializer] Unexpected value should throw UnexpectedValueException
  [ErrorHandler] Don't throw deprecations for HttplugClient
  [Serializer] Fix denormalization of object with typed constructor arg (not castable) and with COLLECT_DENORMALIZATION_ERRORS
  Avoid leading .. for temporary files from Filesystem recursive remove

* 5.4:
  [Mime] regenerate test certificates
  Fix tests
  [Validator] Fix support of Enum to `ConstraintValidator::formatValue`