This change rewrites an internal part of the base system that loads view definitions from files, making the code easier to understand and maintain. It should not change day-to-day user behavior, but it can help reduce future maintenance risk for the platform.

I had troubles understanding how was the function working, I decided to
rework it a bit, ended up rewritting much of it. I hope this new
implementation is easier to understand.

Task: 2463632