[FromServices] requires modelbinding to run for each of these four
properties, which allocates a lot, and ultimately just ends up calling
GetRequiredService in the end.
Also, retrieving these services is now lazy, which should be very
beneficial as few of them aren't used often.
- #2825
- new class names align with existing types such as `HttpNotFoundResult` and `HttpNotFoundObjectResult`
- remove similar types from WebApiCompatShim and use replacements in `ApiController`
- `NegotiatedContentResult<T>` remains because Core doesn't have an exact replacement
nits:
- add missing periods in some `Controller` doc comments
Makes it easier to render a view component from inside a controller. This
makes it possible to implement behavior where an ajax request refreshes
part of a page.