[Chat] Rename invite route to /chat/ (#10782)

src/components/Post/Embed/ChatInviteEmbed.tsx

@@ -8,7 +8,7 @@ import {JoinRequestEmbedBody} from '#/components/Post/Embed/JoinRequestEmbed'
 
 /**
  * Renders a chat invite link found in an `app.bsky.embed.external` embed (e.g.
- * a `bsky.app/c/<code>` link posted to the feed) as a join request card,
+ * a `bsky.app/chat/<code>` link posted to the feed) as a join request card,
  * falling back to a plain external embed if the invite can't be resolved.
  */
 export function ChatInviteEmbed({

src/components/dms/ChatInvite/Root.tsx

@@ -78,7 +78,7 @@ export function Root({
         color: 'primary',
         disabled: false,
         onPress: () => {
-          void setStringAsync(`https://bsky.app/c/${preview.code}`)
+          void setStringAsync(`https://bsky.app/chat/${preview.code}`)
           Toast.show(l`Copied to clipboard`, {type: 'success'})
         },
       }