Widget improvement and how to extend in child theme

Hi, I've noticed that the widget "NooPropertyFeaturedWidget" only shows the latest term you add to it next to it, my client needed to show each term on the list that the widget displays for a property, so I've edited the code to add a separator for each term instead of using a break to finish the loop.

Original code: https://snipboard.io/PWtwkI.jpg
Updated code: https://snipboard.io/tgKIrm.jpg

Example of how a property with two terms looks like in the front end now using the separator: https://snipboard.io/pl2wHO.jpg

How can I make this change persistent without editing the parent theme?
Thanks!
PD: I'm uploading the source file in case you feel like updating it if you like this solution