Update stale Action typings

We forgot to update them when we changed it in the backend. This also
fixes a bug in the front-end.

crates/radicle-types/bindings/cob/patch/Action.ts

@@ -29,7 +29,7 @@ export type Action =
     review: string;
     body: string;
     location?: CodeLocation;
-    reply_to?: string;
+    replyTo?: string;
     embeds?: Array<Embed>;
   }
   | {

src/components/PatchTimeline.svelte

@@ -311,7 +311,7 @@
         </div>
         <div class="wrapper">
           <NodeId {...authorForNodeId(op.author)} />
-          {op.reply_to ? "replied to a comment" : "commented"} on review <Id
+          {op.replyTo ? "replied to a comment" : "commented"} on review <Id
             id={op.review}
             variant="oid" />
           <div title={absoluteTimestamp(op.timestamp)}>