Anthbot Map v2.4.9.3

• Fixes the 2.4.9.2 service-routing regression where presence-heartbeat runtime metadata in hass.data["anthbot_map"] could be treated as a coordinator list, causing 'bool' object is not iterable when commands such as mowing-height changes were sent.
• Hardens coordinator discovery and config-entry service loops so non-list runtime metadata is ignored safely.
• Fixes last-entry unload cleanup so presence runtime metadata does not prevent global Anthbot Map services and the schedule engine from being cleaned up.
• Adds regression coverage for the presence-runtime routing case.
• No mower command payload, model-specific control, map rendering, calibration, voice-store, or other 2.4.9.2 behavior is changed by this hotfix.