Do not set $_SERVER['HTTP_ACCEPT'] variable

[Chi-teck]

Describe the bug
Symfony Var Dumper now relies on this variable to resolve appropriate dumper when format is not specified explicitly.

symfony/symfony#58070

To Reproduce
Dump a variable in Drush command on Drupal 8.3 site.

Expected behavior
A dump in CLI format

Actual behavior
A dump in HTML format

Workaround
Put this line to settings.php

$_SERVER['VAR_DUMPER_FORMAT'] = \PHP_SAPI === 'cli' ? 'cli' : 'html';

System Configuration

Q	A
Drush version?	13.7
Drupal version?	11.3
PHP version	8.4
OS?	Linux

Additional information
The $_SERVER['HTTP_ACCEPT'] is set in \Drush\Boot\DrupalBoot8::bootstrapDrupalSiteValidate.
I suppose we can simply remove $request->overrideGlobals(); call as there is no point to set 'HTTP_' variables in CLI SAPI. The other way is setting HTTP_ACCEPT manually like follows.

$server = [
    'SCRIPT_FILENAME' => getcwd() . '/index.php',
    'SCRIPT_NAME' => isset($parsed_url['path']) ? $parsed_url['path'] . 'index.php' : '/index.php',
    'HTTP_ACCEPT' => '',
] + $_SERVER;

[weitzman]

I suppose we can simply remove $request->overrideGlobals();

The only reason we do that is to appease Drupal's bootstrap. Maybe its not necessary anymore, but I'm sure it used to be. I'd appreciate if someone submitted a PR for this, ideally removing our code.