fix: change internalEmbedObs.disconnect() behavior to respond to medi…

…a fallback

Obsidian handles webm audio first as <video>, then fallback to <audio>. However, originally the
internalEmbedObs is disconnected as soon as the first <video> is added, which failed to detect
<audio> fallback. Now the internalEmbedObs.disconnected() is placed 1.5s after
internalEmbedObs.observe() to fix this.

fix #4

src/processor.ts

@@ -112,14 +112,17 @@ export function processInternalEmbeds(/* this: MediaExtended,  */el:HTMLElement,
                 `Unexpected addnote type: ${m.addedNodes[0].nodeName}`
               );
           }
-          observer.disconnect();
         }
       }
     }
   );
 
   for (const span of el.querySelectorAll("span.internal-embed")) {
     internalEmbedObs.observe(span, { childList: true });
+    setTimeout( ()=>{
+      internalEmbedObs.disconnect();
+      console.log('internalEmbedObs disconnected');
+    } , 1500);
   }
 
   function handleMedia(m:MutationRecord){