…lements` when setting `allow_all_static_elements: true` (norkunas)

This PR was merged into the 6.1 branch.

Discussion
----------

[FrameworkBundle][HtmlSanitizer] Fix calling `allowStaticElements` when setting `allow_all_static_elements: true`

| Q             | A
| ------------- | ---
| Branch?       | 6.1
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | N/A
| License       | MIT
| Doc PR        | [symfony/symfony-docs#... <!-- required for new features -->](symfony/symfony-docs#16838)

```
Symfony\Component\ErrorHandler\Error\UndefinedMethodError {#21964
  #message: """
    Attempted to call an undefined method named "allowAllStaticElements" of class "Symfony\Component\HtmlSanitizer\HtmlSanitizerConfig".\n
    Did you mean to call e.g. "allowSafeElements" or "allowStaticElements"?
    """
  #code: 0
  #file: "./var/cache/dev/ContainerXJ5lfcV/getHtmlSanitizer_Sanitizer_PostContent_SanitizerService.php"
  #line: 25
  trace: {
    ./var/cache/dev/ContainerXJ5lfcV/getHtmlSanitizer_Sanitizer_PostContent_SanitizerService.php:25 {
      ContainerXJ5lfcV\getHtmlSanitizer_Sanitizer_PostContent_SanitizerService::do($container, $lazyLoad = true)
      › $a = new \Symfony\Component\HtmlSanitizer\HtmlSanitizerConfig();
      › $a = $a->allowAllStaticElements();
      › $a = $a->forceHttpsUrls(false);
    }
    ./var/cache/dev/ContainerXJ5lfcV/App_KernelDevDebugContainer.php:981 { …}
    ./var/cache/dev/ContainerXJ5lfcV/getTestCommandService.php:23 { …}
    ./var/cache/dev/ContainerXJ5lfcV/App_KernelDevDebugContainer.php:981 { …}
    ./vendor/symfony/dependency-injection/Container.php:383 { …}
    ./vendor/symfony/dependency-injection/Argument/ServiceLocator.php:43 { …}
    ./vendor/symfony/console/CommandLoader/ContainerCommandLoader.php:46 { …}
    ./vendor/symfony/console/Application.php:570 { …}
    ./vendor/symfony/console/Application.php:657 { …}
    ./vendor/symfony/framework-bundle/Console/Application.php:114 { …}
    ./vendor/symfony/console/Application.php:259 { …}
    ./vendor/symfony/framework-bundle/Console/Application.php:80 { …}
    ./vendor/symfony/console/Application.php:171 { …}
    ./vendor/symfony/runtime/Runner/Symfony/ConsoleApplicationRunner.php:54 { …}
    ./vendor/autoload_runtime.php:29 { …}
    ./bin/console:15 { …}
  }
}
```

Commits
-------

98a4b8a [HtmlSanitizer][FrameworkBundle] Fix calling `allowStaticElements` when setting `allow_all_static_elements: true`