fix: stop native play() failures from forcing play-url refresh

Normalize LivePlayer video.play() rejections to HlsError so Monitor
marks fatal instead of fromRetry-refreshing /play-url in a burst.

src/components/LivePlayer.vue

@@ -302,7 +302,14 @@ async function attachPlayer(url, { seq: existingSeq } = {}) {
         return
       }
       console.warn('[live-player] play failed', error)
-      if (seq === attachSeq) emitFatal(error)
+      if (seq === attachSeq) {
+        // 规范化为 HlsError，避免父层把原生 DOMException 当可重试错误去刷 /play-url
+        emitFatal(buildPlayError({
+          message: error?.message || 'play failed',
+          name: 'HlsError',
+          code: Number(error?.code) || 0,
+        }))
+      }
     }
   }