There is no /g regex modifier in PHP

Problem/Motivation

In https://git.drupalcode.org/project/conditional_fields/-/blob/4.x/src/Con... we're doing a

$values = preg_split("/[\r\n]+/g", $value_data);

There is no /g regex modifier in PHP and it therefore throws the following warning.

Warning: preg_split(): Unknown modifier 'g' in Drupal\conditional_fields\ConditionalFieldsHandlerBase->getConditionValues() (line 37 of modules/contrib/conditional_fields/src/ConditionalFieldsHandlerBase.php).

It most likely came from a regex conversion from JS to PHP, because JS has that modifier.

Steps to reproduce

Proposed resolution

Remove the modifier. It should not have any effect anyhow.

Remaining tasks

User interface changes

API changes

Data model changes