feat(render): tint entities from sampled block and sky light

[sandexzx]

Summary

• Entities sample packed block/sky light at the eye block and tint materials with the same brightness curve as blocks.
• Lighting in Newer Versions (1.13+) remains off by default. Enable it manually to test entity lighting. Off fullbrights both blocks and entities. Saved preferences are preserved; there is no false-to-true migration. The leaked migratedNewVersionsLightingDefault flag is stripped from saved options so it never appears in All Settings.
• Light-only column reloads on 1.18+ WASM pass isLightUpdate and drop only the fused raw map_chunk cache, so blocks remesh from the updated JSON column. v16/v17 light overlays are unchanged.
• Leather-armor (and other authored) color changes on a reused material are kept after lighting invalidation. Damage flash still restores the pre-flash base.
• Distant column ingest no longer bumps the global light generation, so it does not retint every entity.

Out of scope

• This PR does not implement client-side light recomputation. With no server light update after place/break, it cannot regenerate light by itself. Received server light updates are applied.

Relationship to #96

This PR remains independently mergeable for entity lighting. #96 includes this branch, including the opt-in defaults fix (465cf22), and adds the experimental 1.17.1 client-side light engine.

Validation of the defaults fix

• Renderer defaults, entity-light controller, and renderer light-cache tests: 28 passed.
• Formatting check passed.

UPD — entity lighting is now opt-in

Following review feedback, entity lighting has its own independent option, Entity Lighting, defaulting to off. Existing profiles—including those with newVersionsLighting: true—do not implicitly enable it.

• Entity lighting is gated by both the world-lighting flag and the new entity-lighting flag. With either disabled, entities remain fullbright; enabling entity lighting does not change block lighting.
• The new option is exposed in renderer settings with a tooltip and is synchronized to a dedicated runtime config flag. The entity controller notices live toggle changes and restores the original material color when lighting is turned off.
• Updated the newVersionsLighting tooltip to clarify that it controls block and sky lighting, not entity lighting.

Validation: renderer unit tests (483 tests) and pnpm typecheck pass. The live toggle was also checked in-game.

[zardoy]

Also let's make such entity lighting opt-in as well for now