fix(live): 라이브 상세 표시를 보정한다

SodaLive/Sources/Live/Room/Detail/LiveDetailView.swift

@@ -272,6 +272,10 @@ struct LiveDetailView: View {
         .onAppear {
             viewModel.getDetail(roomId: roomId)
         }
+        .onChange(of: viewModel.isShowPopup) { isShowing in
+            guard isShowing, viewModel.room == nil else { return }
+            handleDetailLoadFailure()
+        }
     }
     
     @ViewBuilder
@@ -473,6 +477,18 @@ struct LiveDetailView: View {
         }
     }
 
+    private func handleDetailLoadFailure() {
+        let message = viewModel.errorMessage
+        viewModel.isShowPopup = false
+        AppState.shared.isShowErrorPopup = false
+        hideView()
+
+        DispatchQueue.main.asyncAfter(deadline: .now() + 0.25) {
+            AppState.shared.errorMessage = message
+            AppState.shared.isShowErrorPopup = true
+        }
+    }
+
     private func makeSnsItems(from manager: GetRoomDetailManager) -> [LiveDetailSnsItem] {
         var items = [LiveDetailSnsItem]()