Bug: On macOS, Chrome briefly appears in the Dock when starting a headless browser

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When using chrome-php to launch a headless Chrome instance on macOS, the Chrome app briefly shows in the Dock during startup. This is unexpected for headless operation and can be disruptive in environments where the Dock visibility should not change (e.g., during screen recordings, kiosk apps, or automated test runners on a developer workstation).

OSX 15.7.1
Chrome 140

$browserFactory = new BrowserFactory();
$browser = $browserFactory->createBrowser(array(
	'headless'                => true,
	'ignoreCertificateErrors' => true,
	'disableNotifications'    => true,
	'windowSize'              => [
		1000,
		1000
	],
	'customFlags'             => [
		'--remote-allow-origins=http://127.0.0.1'
	],
	'args'                    => [
		'--no-crashpad',
		'--disable-dev-shm-usage',
		'--disable-gpu',
		'--headless',
		'--disable-software-rasterizer',
		'--no-sandbox',
		'--crashpad-database=/var/www/.local/crashpad'
	],
));

$page = $browser->createPage();

$page->setViewport($windowWidth, $windowHeight);

$page->addPreScript('window.confirm = window.alert = function() {};');

$page->navigate($url)
		   ->waitForNavigation(Page::LOAD, 25000);

usleep(100000); // wait 100ms for proper screenshot


$screenshot = $page->screenshot();

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https://issues.chromium.org/issues/458409060