Cesium for Unreal v2.9.0

This release includes support for Unreal Engine v5.2, v5.3, and v5.4 for Windows, Linux, macOS, Android, and iOS. Please select the appropriate ZIP for your version.

• Unreal Engine 5.2: CesiumForUnreal-52-v2.9.0.zip
• Unreal Engine 5.3: CesiumForUnreal-53-v2.9.0.zip
• Unreal Engine 5.4: CesiumForUnreal-54-v2.9.0.zip

Additions 🎉

• Added SampleHeightMostDetailed function to Cesium3DTileset, which asynchronously queries the height of a tileset at a list of positions. It is callable from both C++ and Blueprints.

Fixes 🔧

• Drastically reduced tile mesh memory usage in UE 5.3 and 5.4 by working around a bug that causes those engine versions to add more texture coordinate sets than necessary.
• Fixed a bug where the scale, noData, and default values of a property in EXT_structural_metadata were not correctly passed to the tileset's material.

This release updates cesium-native from v0.39.0 to v0.40.1. See the changelog for a complete list of changes in cesium-native.