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

SodaLive/Sources/Content/All/ByTheme/ContentAllByThemeView.swift

@@ -9,11 +9,12 @@ import SwiftUI
 
 struct ContentAllByThemeView: View {
     @StateObject var viewModel = ContentAllByThemeViewModel()
+    @State private var isInitialized = false
     
     let themeId: Int
     
     var body: some View {
-        NavigationView {
+        Group {
             BaseView(isLoading: $viewModel.isLoading) {
                 VStack(alignment: .leading, spacing: 0) {
                     DetailNavigationBar(title: viewModel.theme)
@@ -111,8 +112,11 @@ struct ContentAllByThemeView: View {
                     }
                 }
                 .onAppear {
-                    viewModel.themeId = themeId
-                    viewModel.getContentList()
+                    if !isInitialized || viewModel.themeId != themeId {
+                        viewModel.themeId = themeId
+                        viewModel.getContentList()
+                        isInitialized = true
+                    }
                 }
             }
         }