feat(image): 메인 홈, 채팅 - 톡 페이지에 DownsampledKFImage 적용

- 수평 리스트 HStack → LazyHStack으로 교체해 프리로딩/메모리 개선

SodaLive/Sources/Home/RecommendChannel/RecommendChannelContentItemView.swift

@@ -16,11 +16,11 @@ struct RecommendChannelContentItemView: View {
     
     var body: some View {
         HStack(spacing: 16) {
-            KFImage(URL(string: item.thumbnailImageUrl))
-                .cancelOnDisappear(true)
-                .resizable()
-                .frame(width: 60, height: 60)
-                .cornerRadius(12)
+            DownsampledKFImage(
+                url: URL(string: item.thumbnailImageUrl),
+                size: CGSize(width: 60, height: 60)
+            )
+            .cornerRadius(12)
             
             VStack(alignment: .leading, spacing: 2) {
                 Text(item.title)

SodaLive/Sources/Home/RecommendChannel/RecommendChannelItemView.swift

@@ -17,12 +17,11 @@ struct RecommendChannelItemView: View {
     var body: some View {
         VStack(alignment: .leading, spacing: 12) {
             HStack(spacing: 6) {
-                KFImage(URL(string: item.creatorProfileImageUrl))
-                    .cancelOnDisappear(true)
-                    .resizable()
-                    .aspectRatio(contentMode: .fill)
-                    .frame(width: 80, height: 80, alignment: .top)
-                    .clipShape(Circle())
+                DownsampledKFImage(
+                    url: URL(string: item.creatorProfileImageUrl),
+                    size: CGSize(width: 80, height: 80)
+                )
+                .clipShape(Circle())
                 
                 VStack(alignment: .leading, spacing: 4) {
                     Text(item.creatorNickname)