修复: 更新selectedItem以正确传递logo给播放器

- 获取series logo后同时更新item和selectedItem
- target = selectedItem ?: item，仅更新item不够
- 确保播放器的titleLogoUrl正确获取logo URL

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

app/src/main/kotlin/com/example/myapplication/navigation/AppNavHost.kt

@@ -452,6 +452,7 @@ private fun PlayerDestination(
                         imageTags = (item!!.imageTags ?: emptyMap()) + mapOf("Logo" to seriesItem.logoImageTag!!)
                     )
                     item = updated
+                    selectedItem = updated
                 }
             } catch (_: Exception) { /* ignore */ }
         }