This PR handles SSE create event.
It also fixes a regression on board, which was making it flash with
skeletons on any update / create.
This PR was a good test case to experience how each main components of
the app : table, board, calendar, reacts to a create event.
It is not straightforward for now, because each component handles
records with its own state management to turn those records into a
coherent display of rows or cards.
The requests for each component are also different : fetch more, group
by, multiple requests in parallel, so the cleanest way to handle
optimistic effect requires to create one small optimistic engine per
component tuned for its internal data logic.
For now we've decided to implement what's doable in a reasonable amount
of time and that includes not handling table with groups for now.
Creating a clean optimistic logic for each component will be done later.
# QA
## Importing 100 records via the API (could be a script, a workflow, an
AI calling tools, a CSV import, etc.)
https://github.com/user-attachments/assets/d38a3770-8b0a-4f83-8275-5e7d1be0a5c6
## Creating from different components and seeing the SSE event being
processed by other components
https://github.com/user-attachments/assets/106b2f49-19cb-4190-92b7-0653c8373366
Lucas Bordeau
2835935f11