### Godot version

v4.1.dev.custom_build.a7276f1ce

### System information

Win10, AMD 2600, GeForce GTX 1060, Vulkan API 1.3.205

### Issue description

I can't get correct color data from an array of source_color type.
The color data is saved as **Color** in the file:
`shader_parameter/palette = [Color (1, 0, 0, 1), Color (0, 1, 0, 1), Color (0, 0, 1, 1)]`
Shouldn't it be saved as PackedColorArray?


### Steps to reproduce

1.Declare an array of source_color type.
2.Set colors.

### Minimal reproduction project

[shadertest.zip](https://github.com/godotengine/godot/files/11246504/shadertest.zip)

return 4;
		case TYPE_IVEC2:
			return 8;
		case TYPE_IVEC3:
			return 12;
		case TYPE_IVEC4:
			return 16;
		case TYPE_UINT:
			return 4;
		case TYPE_UVEC2:
			return 8;
		case TYPE_UVEC3:
			return 12;
		case TYPE_UVEC4:
			return 16;
		case TYPE_FLOAT:
			return 4;
		case TYPE_VEC2:
			return 8;
		case TYPE_VEC3:
			return 12;
		case TYPE_VEC4:
			return 16;
		case TYPE_MAT2:
			return 32; 
		case TYPE_MAT3:
			return 48; 
		case TYPE_MAT4:
			return 64;
		case TYPE_SAMPLER2D: