fix(android): remove trailing semicolon in android clipboard match arm

The Err arm in stats_plugin.rs had a trailing semicolon on
toast.write(...) making it return () while the Ok arm returned
MessageId<InfoToastEvent>. Only caught on Android because the block is
cfg(target_os = "android") gated; the Linux CI never compiled it.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

solitaire_engine/src/stats_plugin.rs

@@ -365,7 +365,7 @@ fn handle_copy_share_link_button(
             Ok(()) => toast.write(InfoToastEvent(format!("Copied: {url}"))),
             Err(e) => {
                 warn!("android clipboard failed: {e}");
-                toast.write(InfoToastEvent(format!("Share link: {url}")));
+                toast.write(InfoToastEvent(format!("Share link: {url}")))
             }
         }
     }