[5.2] New articles module - read more limit doesn't work

[paternax]

Steps to reproduce the issue

Set in the Display options - Read more limit to 20

Expected result

The Read more line should be cut after 20 characters

Actual result

The whole Read more line is shown

System information (as much as possible)

Joomla 5.2rc1, PHP 8.2

Additional comments

[Quy]

Please test PR #44189. Thanks for the report.