refactor the generate id logic

Signed-off-by: yujin-emma <yujin.emma.work@gmail.com>

src/core/server/saved_objects/import/regenerate_ids.ts

@@ -37,16 +37,13 @@ import { SavedObject } from '../types';
  * @param objects The saved objects to generate new IDs for.
  */
 export const regenerateIds = (objects: SavedObject[], dataSourceId: string | undefined) => {
-  const importIdMap = objects
-    .filter((object) => object.type !== 'data-source')
-    .reduce((acc, object) => {
-      if (dataSourceId) {
-        return acc.set(`${object.type}:${object.id}`, {
-          id: `${dataSourceId}_${uuidv4()}`,
+  const importIdMap = objects.reduce((acc, object) => {
+    return object.type === 'data-source'
+      ? acc
+      : acc.set(`${object.type}:${object.id}`, {
+          id: dataSourceId ? `${dataSourceId}_${uuidv4()}` : uuidv4(),
           omitOriginId: true,
         });
-      }
-      return acc.set(`${object.type}:${object.id}`, { id: uuidv4(), omitOriginId: true });
-    }, new Map<string, { id: string; omitOriginId?: boolean }>());
+  }, new Map<string, { id: string; omitOriginId?: boolean }>());
   return importIdMap;
 };