fix(ui): make relationship fields update the collection when it is changed in the drawer dropdown (#10338)

To reproduce the bug:
1. Within a Lexical editor, insert a relationship field.
2. In the drawer, change the selected collection.
3. The table below changes correctly, but the title and the "create new"
button quickly revert to the original option.


https://github.com/user-attachments/assets/e4b7c615-4b98-4c11-a4b9-a828606edb6f



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packages/richtext-slate/src/field/elements/relationship/Button/index.tsx

@@ -55,12 +55,6 @@ const RelationshipButtonComponent: React.FC<Props> = ({ enabledCollectionSlugs }
     [editor, closeDrawer],
   )
 
-  useEffect(() => {
-    // always reset back to first option
-    // TODO: this is not working, see the ListDrawer component
-    setSelectedCollectionSlug(enabledCollectionSlugs[0])
-  }, [isDrawerOpen, enabledCollectionSlugs])
-
   return (
     <Fragment>
       <ListDrawerToggler>