widont() function breaking links and files in last word of a paragraph

[noegogniat]

Description

Using the widont() function on a textarea / writer field with a link (url, file, email) inserts a   HTML entity within the tag and breaks it.

Expected behavior
The widont() function should only replace the last rendered space with a non-breaking one.

Screenshots

To reproduce

1. Create a textarea or a writer field.
2. Add a link / email address to the last word of the last paragraph. Or, to reproduce the file issue, add a file at the very end of the last paragraph.
3. Render the field using widont().
4.   entity breaks the last link, email, or file.

Your setup

Kirby CSM 4.6.1
PHP 8.4.5

Device, OS, browser, and version agnostic. The regular expression |(\S)\s(\S?)$|u used within the function itself (kirby/src/Toolkit/Str.php:1475) doesn't take HTML tags into account.

Additional context
More generally, the widont() function only prevents widows in the last paragraph of a field, with more lengthy text (textarea / writer), the function becomes obsolete.