clarify client components render on server on full page load (#55469)

IMO there is not enough of an indicator that client components render on the server on full page loads towards the top of the documentation page. I've seen plenty of experienced devs totally miss this critical info and get stuck on a problem due to a lack of understanding. Putting at least some kind of indicator above the fold would help with that.




Co-authored-by: Lee Robinson <[email protected]>

docs/02-app/01-building-your-application/03-rendering/02-client-components.mdx

@@ -18,7 +18,7 @@ There are a couple of benefits to doing the rendering work on the client, includ
 
 To use Client Components, you can add the React [`"use client"` directive](https://react.dev/reference/react/use-client) at the top of a file, above your imports.
 
-`"use client"` is used to declare a [boundary](/docs/app/building-your-application/rendering#network-boundary) between a Server and Client Component modules. This means that by defining a `"use client"` in a file, all other modules imported into it, including child components, are considered part of the client bundle - and will be rendered by React on the client.
+`"use client"` is used to declare a [boundary](/docs/app/building-your-application/rendering#network-boundary) between a Server and Client Component modules. This means that by defining a `"use client"` in a file, all other modules imported into it, including child components, are considered part of the client bundle.
 
 ```tsx filename="app/counter.tsx" highlight={1} switcher
 'use client'