fix: don't check if a customer share folder is configured for remote shares

[icewind1991]

No need to check for user preferences if share_with isn't a user.

Fixes#53830

[provokateurin]

commit message also has a typo

[st3iny]

Seems to be obsolete by now.

server/lib/private/Share20/Manager.php

Lines 707 to 713 in 774aad3

	$shareFolder = $this->config->getSystemValue('share_folder', '/');
	if ($share->getShareType() === IShare::TYPE_USER) {
	$allowCustomShareFolder = $this->config->getSystemValueBool('sharing.allow_custom_share_folder', true);
	if ($allowCustomShareFolder) {
	$shareFolder = $this->config->getUserValue($share->getSharedWith(), Application::APP_ID, 'share_folder', $shareFolder);
	}
	}

Please reopen if I'm wrong.