fca185e191
This change is a prerequasity for a later change which will turn the 'di' into its own bazel package. In order to do that we have to: - have `Injector` type be importable by Ivy. This means that we need to create `Injector` as a pure type in `interface` folder which is already a bazel package which Ivy can depend on. - Remove the dependency of `class Injector` on Ivy so that it can be compiled in isolation. We do that by using `-1` as special value for `__NG_ELEMENT_ID__` which tells the Ivy `NodeInjector` than `Injector` is being requested. PR Close #28066