Team > Devices - Polling should consider pagination

### Description

https://github.com/flowforge/flowforge/pull/1209 introduced pagination to Team > Devices but with a caveat. The polling for changes is only checking the first page of devices for changes.

There's a wider issue of how updates should be handled (i.e. server-side events, web sockets, centralised polling) in https://github.com/flowforge/flowforge/issues/1222; this issue is solely to discuss and prioritise either updating the existing logic in Team > Devices to poll considering pagination or replacing it once there is an alternative solution in place.

### Epic/Story

_No response_

Review PR #1209 to understand the pagination change, then inspect the Team > Devices polling logic and issue #1222 for the broader alternatives. Done means the existing polling detects changes on every device page, or the issue is replaced by an agreed alternative solution.

Written by the indexing model from the issue text.