### 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)

r_options->push_back(option);
			}
		}
	}
#endif 
	switch (completion_type) {
		case COMPLETION_NONE: {
			
			return OK;
		} break;
		case COMPLETION_SHADER_TYPE: {
			for (const String &shader_type : p_info.shader_types) {
				ScriptLanguage::CodeCompletionOption option(shader_type, ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
				r_options->push_back(option);
			}
			return OK;
		} break;
		case COMPLETION_RENDER_MODE: {
			if (is_shader_inc) {
				for (int i = 0; i < RenderingServer::SHADER_MAX; i++) {
					const Vector<ModeInfo> modes = ShaderTypes::get_singleton()->get_modes(RenderingServer::ShaderMode(i));
					for (int j = 0; j < modes.size(); j++) {
						const ModeInfo &info = modes[j];
						if (!info.options.is_empty()) {
							bool found = false;
							for (int k = 0; k < info.options.size(); k++) {
								if (shader->render_modes.has(String(info.name) + "_" + String(info.options[k]))) {
									found = true;
								}
							}