The assumptions behind disabling error recovery for the `apply` tactic
no longer seem to hold, since tactic combinators like `first` themselves
disable error recovery when it makes sense.
This addresses part of #3831
Breaking change: `elabTermForApply` no longer uses `withoutRecover`.
Tactics using `elabTermForApply` should evaluate whether it makes sense
to wrap it with `withoutRecover`, which is generally speaking when it's
used to elaborate identifiers.
