GA4 ID admin setting persist

[mehigh]

When configuring GA4 ID, the setting does not persist in the administrative interface:

The setting is saved in the database and used for outputting the code correctly

","ga4_id":"UA-1234588"},"chance":"1"};

Problem is reproducible with version 1.3.

Probably it's around this area of the code:
https://github.com/xwp/site-performance-tracker/blob/master/php/src/class-analyticsidfield.php#L53C9-L55