chore(*): fix @[to_additive, simp] to the correct order (#19169)

Whilst making some files, I noticed that there is some lemmas that have the wrong order for `to_additive` and `simp`.

Author: ericrbg

src/algebra/hom/equiv/basic.lean

@@ -309,10 +309,10 @@ fun_like.ext _ _ e.apply_symm_apply
 theorem self_trans_symm (e : M ≃* N) : e.trans e.symm = refl M :=
 fun_like.ext _ _ e.symm_apply_apply
 
-@[to_additive, simp] lemma coe_monoid_hom_refl {M} [mul_one_class M] :
+@[simp, to_additive] lemma coe_monoid_hom_refl {M} [mul_one_class M] :
   (refl M : M →* M) = monoid_hom.id M := rfl
 
-@[to_additive, simp] lemma coe_monoid_hom_trans {M N P}
+@[simp, to_additive] lemma coe_monoid_hom_trans {M N P}
   [mul_one_class M] [mul_one_class N] [mul_one_class P] (e₁ : M ≃* N) (e₂ : N ≃* P) :
   (e₁.trans e₂ : M →* P) = (e₂ : N →* P).comp ↑e₁ :=
 rfl

src/group_theory/subsemigroup/center.lean

@@ -151,7 +151,7 @@ end
 section
 variables (M) [comm_semigroup M]
 
-@[to_additive, simp] lemma center_eq_top : center M = ⊤ :=
+@[simp, to_additive] lemma center_eq_top : center M = ⊤ :=
 set_like.coe_injective (set.center_eq_univ M)
 
 end

src/topology/algebra/monoid.lean

@@ -698,14 +698,14 @@ variables [has_mul X] [has_continuous_mul X]
 @[to_additive "The continuous map `λ y, y + x"]
 protected def mul_right (x : X) : C(X, X) := mk _ (continuous_mul_right x)
 
-@[to_additive, simp]
+@[simp, to_additive]
 lemma coe_mul_right (x : X) : ⇑(continuous_map.mul_right x) = λ y, y * x := rfl
 
 /-- The continuous map `λ y, x * y` -/
 @[to_additive "The continuous map `λ y, x + y"]
 protected def mul_left (x : X) : C(X, X) := mk _ (continuous_mul_left x)
 
-@[to_additive, simp]
+@[simp, to_additive]
 lemma coe_mul_left (x : X) : ⇑(continuous_map.mul_left x) = λ y, x * y := rfl
 
 end continuous_map