Previously, effect() would handle errors differently depending on the effect
type. Root effects had a try/catch that would execute them independently and
report errors to `ErrorHandler`, while component effects would "crash" CD.
This commit switches all effects to use the same error handling (errors
always reach the CD error handler).
An additional unrelated refactoring is thrown in which removes the
`pendingTask` machinery from root effects, since they make `ApplicationRef`
dirty and thus trigger the scheduler.
PR Close#57952
Alex Rickabaugh
7f0b49d8c4