[source-s3]The CSV format does not support the space delimiter

### Connector Name

source-s3

### Connector Version

4.15.4

### What step the error happened?

Configuring a new connector

### Relevant information

I have some CSV format log files which use the space delimiter in AWS S3. I cannot change the delimiter because this is decided by AWS. When I configure a new S3 source and add a CSV format stream, I cannot configure the delimiter to a space. When I type a space in the input box and click "Test and save", the system seems to think I typed nothing and changes the delimiter to the default value ",".

### Relevant log output

```shell

```

### Contribute

- [ ] Yes, I want to contribute

---
**Internal Tracking:** https://github.com/airbytehq/oncall/issues/12763