PHP 8: CSV Export: issue with numeric + CR/line feed

[Gary-van-Breda]

A change has occurred in PHP 8: is_numeric now returns true for any whitespace after the number. This means that the following now returns TRUE from is_numeric, where previously it returned false:
"10
"

This in turn means the logic in function get_csv in file modules/indicia_svc_data/controllers/data_service_base.php is no longer valid: the string above will no longer be wrapped in quotes, breaking the record over 2 lines.