SSR failure with Switch when no routes match

[WorldSEnder]

yew/packages/yew-router/src/switch.rs

Line 44 in a4dcded

console::warn!("no route matched");

This fails to run on non-wasm targets, since it tries to build a JsString. Either should use a platform dependent way to log the warning, or not log any at all. Running SSR with a non-matching route and a Switch triggers the bug. A reproducing example is found in vaniusrb/yew-problem-ssr@c7597fe.