change some other hints to a more general pattern and typeclass instances

theories/bi/embedding.v

@@ -324,4 +324,4 @@ End sbi_embed.
 [class_apply @bi_embed_plainly] shelves the [BiPlainly] premise, making proof
 search for the other premises fail. See the proof of [monPred_objectively_plain]
 for an example where it would fail with a regular [Instance].*)
-Hint Extern 4 (Plain ⎡_⎤) => eapply @embed_plain : typeclass_instances.
+Hint Extern 4 (Plain _) => notypeclasses refine (embed_plain _ _) : typeclass_instances.

theories/bi/plainly.v

@@ -633,4 +633,4 @@ Hint Immediate plain_persistent : typeclass_instances.
 [class_apply @impl_persistent] shelves the [BiPlainly] premise, making proof
 search for the other premises fail. See the proof of [coreP_persistent] for an
 example where it would fail with a regular [Instance].*)
-Hint Extern 4 (Persistent (_ → _)) => eapply @impl_persistent : typeclass_instances.
+Hint Extern 4 (Persistent _) => notypeclasses refine (impl_persistent _ _ _ _ _) : typeclass_instances.