refactor(navigation): 전역 경로 기반 단일 내비게이션 흐름으로 전환한다

SodaLive/Sources/Explorer/Profile/UserProfileView.swift

@@ -26,6 +26,7 @@ struct UserProfileView: View {
     @State private var isShowChannelDonationDialog: Bool = false
     @State private var didTriggerAutoBackOnLoadFailure: Bool = false
     @State private var isViewVisible: Bool = false
+    @State private var loadedUserId: Int? = nil
     
     @State private var maxCommunityPostHeight: CGFloat? = nil
     
@@ -639,7 +640,12 @@ struct UserProfileView: View {
             .onAppear {
                 isViewVisible = true
                 didTriggerAutoBackOnLoadFailure = false
-                viewModel.getCreatorProfile(userId: userId)
+
+                if loadedUserId != userId || viewModel.creatorProfile == nil {
+                    loadedUserId = userId
+                    viewModel.getCreatorProfile(userId: userId)
+                }
+
                 AppState.shared.pushChannelId = 0
             }
             .onDisappear {