Nightly - dlt-schemas

Improve DLT UX (#1474)

## Changes
- Load events with `retry` instead of `setTimeout`
- Better handle cancellation
- Show spinning icon for more DLT states
- Merge Event Log and Run Status tree sections
- Remove run "cause" item, since the same thing is visible in one of the
events

<img width="602" alt="Screenshot 2024-11-28 at 16 24 04"
src="https://github.com/user-attachments/assets/0481ca7e-d00d-4256-99ff-192fd59f696a">


## Tests
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