* refactor: infra queries to use `attributes`
This PR refactors the infrastructure monitoring query code reducing duplication and unifying the API request to always be `attributes`:
• Removed the separate useInfraMonitoringQuery hook and getInfraMonitoring function that handled a single monitoring query
• Consolidated all infrastructure monitoring queries into a unified useInfraMonitoringAttributesQuery hook that handles multi-attribute requests
• Moved interval selection logic from the query layer to the consumer (InfrastructureActivity.tsx), where it can be computed dynamically based on user-selected date ranges
• Simplified query types by removing intermediate InfraMonitoringData and InfraMonitoringVariables types
• Interval is now computed in the component (defaults to 1d, switches to 1h for date ranges ≤48 hours) rather than hardcoded in the query layer
• All queries now use the unified multi-attribute endpoint with explicit parameter passing
* fix: handle single-attribute response format
* Connected clients is now showing the number of connections at the time.
* Broadcast events
* Presence events
* Postgres changes events
* Rate of Channel joins (unchanged)
* Message payload size : median of payload size
* Broadcast From Database Replication Lag: median replication from commit to broadcast
* (Read) Private Channel Subscription RLS Execution Time: median time RLS execution to subscribe
* (Write) Private Channel Subscription RLS Execution Time: median time RLS execution to publish
Raúl Barroso