Bump LoopKit, Loop, EversenseKit and LibreLoop (CI test-host fixes, sensor events)

[ps2]

• LoopKit df4cf60c: Adopt the scene lifecycle in the LoopKit Example app (next-dev) LoopKit#638, scene lifecycle in the LoopKit Example test host (iOS 27 SDK)
• Loop 485108ac: SettingsManagerTests: only wait for the settings manager's notification Loop#2566, SettingsManagerTests waits only for its own notification
• EversenseKit 8fa47b5: Record Eversense alarms that stop glucose as CGM events EversenseKit#3, alarms that stop glucose recorded as sensorIssue events; sensorStart for each new sensor
• LibreLoop 61ca471: Record Libre 3 sensor states and ends as CGM events LibreLoop#19, Libre 3 sensor states and ends recorded as CGM events; README: say that LibreLoop is not an Abbott product LibreLoop#20, README notice that LibreLoop is not an Abbott product

The first two are what #523 needs to go green. The full LoopWorkspace scheme builds with these trees.