Explain what is an injection context #49774
Description
Which @angular/* package(s) are relevant/related to the feature request?
core
Description
With inject getting popularity the concept of "injection context" is getting lots of traction. There's not much information what does this mean and it's non-trivial for folks who don't have in-depth understanding of Angular's DI or how call stacks work.
Proposed solution
Write a guide in https://angular.io/guides which explains what is an "injection context".
Alternatives considered
Reference a 3P article is suboptimal since we can change the semantics with the evolution of the framework.