fix(FEC-12431): [WEB] - [O2CZ] Player_Web_MAC_Safari - The progress b…

…ar jumps front and back when seek

Handle a scenario of this._liveEdge (in native-adapter) being 0 in a live stream, which caused isOnLiveEdge to be true when it shouldn't be.

src/engines/html5/media-source/adapters/native-adapter.js

@@ -1213,7 +1213,7 @@ export default class NativeAdapter extends BaseMediaSourceAdapter {
       }
     } else {
       const liveEdge = this._getLiveEdge();
-      if (this._liveEdge !== liveEdge) {
+      if (this._liveEdge && this._liveEdge !== liveEdge) {
         this._segmentDuration = liveEdge - this._liveEdge;
       }
     }