dataframe can not refresh from 4.17.0

[kongwei]

Describe the bug

dataframe can not refresh from 4.17.0 If set row_count as len(data)+1, the dataframe can refresh.

Have you searched existing issues? 🔎

• [X] I have searched and found no existing issues

Reproduction

import gradio as gr
import random

def show_scan_result():
    data = [['1','','','',str(random.randint(1, 100))],
            ['2','','','',str(random.randint(1, 100))],
            ['3','','','',str(random.randint(1, 100))]]
    return data

with gr.Blocks() as b:
    task_info = gr.DataFrame(datatype=["str", "str", "str", "str", "str"],
                             headers=["ID", "Name", "ReportName", "CreateTime", 'Status'])
    b.load(show_scan_result, inputs=None, outputs=task_info, every=5)

b.launch()```

### Screenshot

![image](https://github.com/gradio-app/gradio/assets/2822004/f12af39b-e070-4d1b-b11e-09a2cbf18ffc)

### Logs

```shell
New message is correct(diff)

{"msg":"process_generating","event_id":"766e28b8dd5e44b89288455ac803ad12","output":{"data":[[["replace",["data",0,4],"58"],["replace",["data",1,4],"19"],["replace",["data",2,4],"2"]]],"is_generating":true,"duration":5.0008909702301025,"average_duration":4.864086980689062},"success":true}

System Info

Gradio Environment Information:
------------------------------
Operating System: Linux
gradio version: 4.28.3
gradio_client version: 0.16.0

------------------------------------------------
gradio dependencies in your environment:

aiofiles: 23.2.1
altair: 5.2.0
fastapi: 0.110.0
ffmpy: 0.3.2
gradio-client==0.16.0 is not installed.
httpx: 0.27.0
huggingface-hub: 0.21.4
importlib-resources: 6.1.3
jinja2: 3.1.3
markupsafe: 2.1.5
matplotlib: 3.8.3
numpy: 1.26.4
orjson: 3.9.15
packaging: 23.2
pandas: 2.2.1
pillow: 10.2.0
pydantic: 2.6.3
pydub: 0.25.1
python-multipart: 0.0.9
pyyaml: 6.0.1
ruff: 0.3.2
semantic-version: 2.10.0
tomlkit==0.12.0 is not installed.
typer: 0.12.3
typing-extensions: 4.10.0
urllib3: 2.2.1
uvicorn: 0.28.0
authlib; extra == 'oauth' is not installed.
itsdangerous; extra == 'oauth' is not installed.

gradio_client dependencies in your environment:

fsspec: 2024.2.0
httpx: 0.27.0
huggingface-hub: 0.21.4
packaging: 23.2
typing-extensions: 4.10.0
websockets: 11.0.3

Severity

I can work around it

[kongwei]

repeat: https://github.com/gradio-app/gradio/issues/8160