fix: show docked Q10 robot on map

[tubededentifrice]

Summary

Final rendering slice extracted from #900, stacked on #903. The Q10 map trait now combines status with map packets so a docked robot is still rendered after its live trace disappears.

Changes

• declare StatusTrait as an explicit map-trait dependency
• use named dock-state enum values for charging and emptying
• clear stale and late trace packets when the robot is docked
• render the docked robot at the saved dock position
• publish one coherent map update when a DPS packet changes both map and status
• test the combined behavior through the public subscription queue

Before / after

These are the real Home Assistant map-card captures from #900.

Before	After

Validation

• pytest -q — 892 passed, 86 snapshots passed
• pre-commit run --files ... — all hooks passed

Stack / review order

1. feat: align Q10 map colors with V1 #902 — base raster and room palette
2. refactor: render Q10 overlays with V1 #903 — V1 overlay renderer
3. This PR: docked-state composition

GitHub cannot target an upstream PR at a branch that exists only in a fork, so
this PR temporarily targets main and includes #902 and #903 in
Files changed. The independent incremental diff is:

tubededentifrice/python-roborock@vc/q10-v1-overlays...vc/q10-docked-state

After its parents merge, this PR can be rebased onto main without changing its review boundary. The transport correction is independent in #901; #900 remains the aggregate full before-and-after reference.