Chore: Tara Additional Requirement

[TenzDelek]

fixes #779

• hide header when scroll
• hide video when user is joining inperson. (show the static image)
• when Commentaries tab is open and hide video and when close again show video

Screenshots

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge with no outstanding blocking or non-blocking findings.

Summary

This PR adds attendance-mode handling for group events and adjusts event-plan presentation based on whether users attend online or in person.

• Adds online/in-person participation selection and API persistence for hybrid events.
• Shows a static event cover instead of the live stream for in-person attendees.
• Switches live video to audio while commentary or translation panels are open.
• Adds collapsible headers driven by reader scroll state.
• Adds model, datasource, dialog, and live-event widget coverage.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Open group event] --> B{Hybrid event?}
    B -->|Yes| C[Choose online or in person]
    B -->|No| D[Infer attendance mode]
    C --> E[Persist participation type]
    D --> F[Open event plan]
    E --> F
    F --> G{Online attendee?}
    G -->|Yes| H[Show live media header]
    G -->|No| I[Show static cover]
    H --> J{Commentary or translation open?}
    J -->|Yes| K[Use audio-only mode]
    J -->|No| L[Use selected media mode]

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