feat: overridable min_y levels for dimensions with ceilings

[MichaelHillcox]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces overridable minimum Y levels for dimensions with ceilings, allowing per-chunk customization of the minimum Y level used when rendering the map. It replaces the previous global custom min Y level setting with a more flexible system that supports both a default override value and per-chunk specific values.

Key Changes:

• Replaced global USE_CUSTOM_MIN_Y_LEVEL with OVERRIDE_MIN_Y_LEVEL and added per-chunk min Y level support
• Implemented ChunkPosWithMinY record and custom config value type for storing chunk-specific Y levels
• Added clamping logic to ensure min Y values stay within dimension build height limits

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
gradle.properties	Version bump from 2101.1.12 to 2101.1.13
HeightUtils.java	Added per-chunk min Y lookup logic with dimension height clamping
FTBChunksClientConfig.java	Migrated config from APPEARANCE to CUSTOM_BEHAVIOUR group and added ChunkPosCustomYSetValue for per-chunk settings

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[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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