fix(ApiDataFactory): Add delay after cleanup for Docker file system propagation

In Docker environments with volume mounts, there can be a delay between:
1. DELETE HTTP request completing successfully
2. json-server writing updated db.json to disk
3. File system syncing the change in the Docker volume
4. Subsequent GET requests reading the updated data

Adding a 100ms delay after all deletions complete ensures file system
changes propagate before tests continue, preventing race conditions
where tests check for deletion immediately and find stale data.

This should resolve the 6 failing REST tests in CI that were finding
leftover data after calling _after() for cleanup.

Author: kobenguyent

lib/helper/ApiDataFactory.js

@@ -256,6 +256,9 @@ class ApiDataFactory extends Helper {
       for (const factoryName in this.created) {
         this.created[factoryName] = []
       }
+      // Add a small delay to ensure file system changes propagate in Docker environments
+      // This helps avoid race conditions where GET requests after DELETE don't see the changes yet
+      return new Promise(resolve => setTimeout(resolve, 100))
     })
   }
 

test/data/rest/db.json

@@ -1 +1 @@
-{"posts":[{"id":1,"title":"json-server","author":"davert"}],"user":{"name":"davert"}}
+{"comments":[],"posts":[{"id":1,"title":"json-server","author":"davert"}]}