Change some props from test to release.
Some Custom ROMs (like LineageOS) build their systems as userdebug which allows for easier debugging and ADB usage.
However, if you want to pass SafetyNet or any alternative, that can be a pain, due to Certified ROMs using user builds.
Also, some developers may use test-keys to sign their builds as opposed to release-keys, which is more of a security concern than anything. (Anyone can use the default test-keys to sign stuff, with the system just accepting those).
So, this module dynamically gets system props from the device and patches them to change userdebug to user and test-keys to release-keys.
The module is confirmed to work in LineageOS 19 (Android 12L) with Magisk 25+.
I took great inspiration from HuskyDG's hide_userdebug module which seems to be abandoned, and didn't seem to work for some prop values, so I made my own version.