## Type of Change
- [x] Bug fix
## Description
Closes#13119
The current IMAP connector uses `split(',')` to parse email headers,
which crashes when a sender's display name contains a comma inside
quotes (e.g., `"Doe, John" <john@example.com>`).
This PR replaces the manual string splitting with Python's standard
`email.utils.getaddresses`. This correctly handles RFC 5322 quoted
strings and prevents the `RuntimeError: Expected a singular address`.
## Checklist
- [x] I have checked the code and it works as expected.
---------
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>
### What problem does this PR solve?
change:
initialize webhook configuration in webhook function
remove debug print statement from airtable_connector
remove redundant uuid import in imap_connector
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
issue:
#12217 [#12313](https://github.com/infiniflow/ragflow/issues/12313)
change:
add IMAP data source integration with configuration and sync
capabilities
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
