Update map component

[kategengler]

Update map component:

• Use named imports from MapLibre
• Give the map a size initially to prevent render errors
• Fix the major that installs for maplibre

[kategengler]

@copilot Undo the map.on('load') change -- I think that was unnecessary and the testem change was the real one

[Copilot]

@copilot Undo the map.on('load') change -- I think that was unnecessary and the testem change was the real one

Done — reverted in 279ca3b. The map.on('load') wrapper is removed and new Marker().setLngLat([lng, lat]).addTo(map) is back as a direct call. Patch line counts and prose updated to match.