…"mp3"

* 3.4:
  Fixed typo in test name
  [HttpFondation] Change file extension of "audio/mpeg" from "mpga" to "mp3"
  [VarDumper] Support for cURL handler objects.
  [DI][FrameworkBundle] Remove whitelist occurrences
  Avoid accessibility errors on debug toolbar

This PR was squashed before being merged into the 3.4 branch.

Discussion
----------

[MimeType] Duplicated MimeType due to PHP Bug

| Q             | A
| ------------- | ---
| Branch?       | 5.1
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | Fix #... <!-- prefix each issue number with "Fix #", if any -->
| License       | MIT
| Doc PR        | symfony/symfony-docs#... <!-- required for new features -->

## Issue:

Currently there is a PHP bug https://bugs.php.net/bug.php?id=77784 that is causing several MimeTypes to be given as duplicated:

```
application/vnd.openxmlformats-officedocument.spreadsheetml.sheetapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet
```
Instead of:
```
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
```

This Patch will fix the Issues by checking if a returned MimeType is duplicated and return appropriate MimeType.

This patch should be reverted if the PHP Bug is ever fixed.

Commits
-------

7cb29c8b4b [MimeType] Duplicated MimeType due to PHP Bug

* 3.4:
  [MimeType] Duplicated MimeType due to PHP Bug
  fix guessing form types for DateTime types
  fix handling typed properties as constraint options

* 3.4:
  Fix test that fails on old distros

… anymore)

* 3.4:
  [Cache] fix catching auth errors
  Fix CS
  [FrameworkBundle] set default session.handler alias if handler_id is not provided
  Fix CS
  Readability update
  Fix checks for phpunit releases on Composer 2 (resolves #37601)
  [SCA] Minor fixes on tests

* 3.4:
  Fix PHPUnit 8.5 deprecations.