# Fix bug in `iApply` prettification.

Situation before this MR:

```
From iris.proofmode Require Import tactics.
Lemma test_iApply_reduce {PROP : bi} (Ψ Φ : nat → PROP) :
(∀ f y, TCEq f (λ x, x + 10) → Ψ (f 1) -∗ Φ y) →
Ψ 11 -∗ Φ 10.
Proof.
iIntros (HP) "H".
iApply HP. (* [Ψ ((λ x : nat, x + 10) 1)] does not reduce *)
reduction.pm_reduce. (* [Ψ (1 + 10)] does reduce *)
Restart.
iIntros (HP) "H".
iApply (HP _ _ _). (* [Ψ (1 + 10)] does reduce *)
iApply "H".
Qed.
```

This MR fixes this problem by moving the `pm_prettify`

to the outside. This is needed because only at that moment all TCs have been solved.