Remove some references to RID internally and use uid instead. Also fix Area issue. #820

Job	Run time
Deploy Release to Godot Asset Library	0s
📊 Static checks / Clippy 2D	1m 4s
Godot / 2d single simd-parallel	4s
📊 Static checks / Clippy 3D	1m 1s
📊 Static checks / Format Code	15s
Godot / 2d single enhanced-determinism	4s
Godot / 3d single simd-parallel	4s
🧪 Run Tests / Run Tests	5m 14s
Godot / 3d single enhanced-determinism	13s
🧪 Run Tests / Run Tests	5m 27s
🐧 Linux	0s
🤖 Android	0s
🍎 macOS	0s
🍏 iOS	0s
🌐 Web Builds	0s
🏁 Windows	0s
Merge	0s
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	13m 26s

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