### 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)

} break;
				case RS::GLOBAL_VAR_TYPE_SAMPLER2D: {
					pinfo.type = Variant::OBJECT;
					pinfo.hint = PROPERTY_HINT_RESOURCE_TYPE;
					pinfo.hint_string = "Texture2D";
				} break;
				case RS::GLOBAL_VAR_TYPE_SAMPLER2DARRAY: {
					pinfo.type = Variant::OBJECT;
					pinfo.hint = PROPERTY_HINT_RESOURCE_TYPE;
					pinfo.hint_string = "Texture2DArray";
				} break;
				case RS::GLOBAL_VAR_TYPE_SAMPLER3D: {
					pinfo.type = Variant::OBJECT;
					pinfo.hint = PROPERTY_HINT_RESOURCE_TYPE;
					pinfo.hint_string = "Texture3D";
				} break;
				case RS::GLOBAL_VAR_TYPE_SAMPLERCUBE: {
					pinfo.type = Variant::OBJECT;
					pinfo.hint = PROPERTY_HINT_RESOURCE_TYPE;
					pinfo.hint_string = "Cubemap";
				} break;
				default: {
				} break;
			}
			p_list->push_back(pinfo);
		}
	}
public:
	bool block_update = false;
	ShaderGlobalsEditorInterface() {