do not load ruffle multiple times!

src/services/ruffle_service/ruffle_service.js

@@ -2,7 +2,10 @@ const createRuffleService = () => {
   let ruffleInstance = null
 
   const getRuffle = () => new Promise((resolve, reject) => {
-    if (ruffleInstance) resolve(ruffleInstance)
+    if (ruffleInstance) {
+      resolve(ruffleInstance)
+      return
+    }
     // Ruffle needs these to be set before it's loaded
     // https://github.com/ruffle-rs/ruffle/issues/3952
     window.RufflePlayer = {}