Accessing the video link does not direct user with ticket to the video room

[lcduong]

This PR closes/references issue #220 . It does so by:
root cause is that attendee identifier from talk and ticket not matches when using auto login.
solution: when login using cookie, also consider attendee identifier

How has this been tested?

Checklist

• I have added tests to cover my changes.

Summary by Sourcery

Resolve the issue of users not being directed to the video room when accessing the video link by updating the auto-login process to consider the attendee identifier.

Bug Fixes:

• Fix the issue where accessing the video link does not direct users with a ticket to the video room by ensuring the attendee identifier is considered during auto-login.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request addresses an issue where users with tickets were not being directed to the video room when accessing the video link. The core of the change involves modifying the auto-login process to consider the attendee identifier when logging in using a cookie. Additionally, the PR introduces checks to prevent auto-login attempts on certain paths.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Modified auto-login process to consider attendee identifier	Added a check to skip auto-login for '/callback' and '/signup' paths Included 'customer_identifier' from the payload when updating user information Assigned 'customer_identifier' to user's 'code' field during auto-login	src/pretalx/common/middleware/event.py
Enhanced authentication check in the middleware	Extended the condition to skip auto-login when user is authenticated or on specific paths	src/pretalx/common/middleware/event.py

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[sourcery-ai]

Hey @lcduong - I've reviewed your changes - here's some feedback:

Overall Comments:

• Please add tests to cover these changes, especially for the new login behavior and SSO token handling.
• Can you provide a brief explanation of the security implications of these changes, particularly regarding the modification of the user authentication flow?

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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