fix된 지붕면은 제거 안하도록 수정

src/hooks/roofcover/useRoofShapeSetting.js

@@ -377,20 +377,20 @@ export function useRoofShapeSetting(id) {
     }
 
     // 기존 wallLine, roofBase 제거
-    /*canvas
+    canvas
       .getObjects()
       .filter((obj) => obj.name === POLYGON_TYPE.WALL)
       .forEach((line) => {
         canvas.remove(line)
-      })*/
+      })
 
-    /*canvas
+    canvas
       .getObjects()
-      .filter((obj) => obj.name === POLYGON_TYPE.ROOF)
+      .filter((obj) => obj.name === POLYGON_TYPE.ROOF && !obj.isFixed)
       .forEach((obj) => {
         canvas.remove(...obj.innerLines)
         canvas.remove(obj)
-      })*/
+      })
 
     const polygon = addPolygonByLines(outerLines, { name: POLYGON_TYPE.WALL, direction })
     polygon.lines = [...outerLines]