fix(content): 전체 탭 grid 간격을 보정한다

app/src/main/java/kr/co/vividnext/sodalive/v2/main/content/ui/ContentRecyclerItemLayoutParams.kt

@@ -4,6 +4,7 @@ import android.graphics.Rect
 import android.view.View
 import androidx.recyclerview.widget.RecyclerView
 import kr.co.vividnext.sodalive.extensions.dpToPx
+import kotlin.math.roundToInt
 
 fun RecyclerView.addContentHorizontalItemSpacing() {
     if (itemDecorationCount == 0) addItemDecoration(ContentHorizontalItemDecoration())
@@ -28,10 +29,10 @@ private class ContentGridItemDecoration(
     override fun getItemOffsets(outRect: Rect, view: View, parent: RecyclerView, state: RecyclerView.State) {
         val position = parent.getChildAdapterPosition(view)
         if (position == RecyclerView.NO_POSITION) return
-        val isLeftColumn = position % spanCount == 0
-        val halfGap = GRID_ITEM_GAP_DP.dpToPx().toInt() / 2
-        outRect.left = if (isLeftColumn) 0 else halfGap
-        outRect.right = if (isLeftColumn) halfGap else 0
+        val columnIndex = position % spanCount
+        val gap = GRID_ITEM_GAP_DP.dpToPx()
+        outRect.left = (columnIndex * gap / spanCount).roundToInt()
+        outRect.right = (gap - (columnIndex + 1) * gap / spanCount).roundToInt()
         if (position >= spanCount) outRect.top = GRID_ITEM_VERTICAL_GAP_DP.dpToPx().toInt()
     }
 }