tar.gz file can't upload in function.

### 👟 Reproduction steps

1. Go to functions
2. Click on Create function
3. Scroll down to manually deploy
4. All setup done and create tar.gz file, when upload code- it's not selected to upload in the function

### 👍 Expected behavior

when try to upload the generated tar.gz file, it can be selectable and also can upload though drag and drop

### 👎 Actual Behavior

tar.gz file can't select and cant upload in appwrite function manual deployment

### 🎲 Appwrite version

Appwrite Cloud

### 💻 Operating system

MacOS

### 🧱 Your Environment

_No response_

### 👀 Have you spent some time to check if this issue has been raised before?

- [x] I checked and didn't find similar issue

### 🏢 Have you read the Code of Conduct?

- [x] I have read the [Code of Conduct](https://github.com/appwrite/.github/blob/main/CODE_OF_CONDUCT.md)

Start at Functions > Create function > manual deployment and inspect the code behind the upload control, using the reported tar.gz selection and drag-and-drop behavior as the reproduction case. Done means a generated .tar.gz file can be selected and uploaded successfully in Appwrite Cloud, while existing upload behavior remains intact.

Written by the indexing model from the issue text.