fix: resolve flaky pagination integration test (isolated collection)

tests/integration/database/base_model.spec.ts

@@ -90,7 +90,7 @@ describe('BaseModel (integration)', () => {
   })
 
   it('pagination works with skip and limit', async () => {
-    const col = db.collection('test_base')
+    const col = db.collection('test_pagination')
     const docs = Array.from({ length: 25 }, (_, i) => ({ idx: i }))
     await col.insertMany(docs)
     const page1 = await col.find({}).sort({ idx: 1 }).skip(0).limit(10).toArray()
@@ -99,6 +99,7 @@ describe('BaseModel (integration)', () => {
     expect(page2).toHaveLength(10)
     expect(page1[0].idx).toBe(0)
     expect(page2[0].idx).toBe(10)
+    await col.drop()
   })
 
   it('updateMany modifies multiple documents', async () => {