### 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)

uses_quarter_res = false;
	uses_position = false;
	uses_light = false;
	actions.render_mode_flags["use_half_res_pass"] = &uses_half_res;
	actions.render_mode_flags["use_quarter_res_pass"] = &uses_quarter_res;
	actions.usage_flag_pointers["TIME"] = &uses_time;
	actions.usage_flag_pointers["POSITION"] = &uses_position;
	actions.usage_flag_pointers["LIGHT0_ENABLED"] = &uses_light;
	actions.usage_flag_pointers["LIGHT0_ENERGY"] = &uses_light;
	actions.usage_flag_pointers["LIGHT0_DIRECTION"] = &uses_light;
	actions.usage_flag_pointers["LIGHT0_COLOR"] = &uses_light;
	actions.usage_flag_pointers["LIGHT0_SIZE"] = &uses_light;
	actions.usage_flag_pointers["LIGHT1_ENABLED"] = &uses_light;
	actions.usage_flag_pointers["LIGHT1_ENERGY"] = &uses_light;
	actions.usage_flag_pointers["LIGHT1_DIRECTION"] = &uses_light;
	actions.usage_flag_pointers["LIGHT1_COLOR"] = &uses_light;
	actions.usage_flag_pointers["LIGHT1_SIZE"] = &uses_light;
	actions.usage_flag_pointers["LIGHT2_ENABLED"] = &uses_light;
	actions.usage_flag_pointers["LIGHT2_ENERGY"] = &uses_light;
	actions.usage_flag_pointers["LIGHT2_DIRECTION"] = &uses_light;
	actions.usage_flag_pointers["LIGHT2_COLOR"] = &uses_light;
	actions.usage_flag_pointers["LIGHT2_SIZE"] = &uses_light;
	actions.usage_flag_pointers["LIGHT3_ENABLED"] = &uses_light;
	actions.usage_flag_pointers["LIGHT3_ENERGY"] = &uses_light;
	actions.usage_flag_pointers["LIGHT3_DIRECTION"] = &uses_light;
	actions.usage_flag_pointers["LIGHT3_COLOR"] = &uses_light;
	actions.usage_flag_pointers["LIGHT3_SIZE"] = &uses_light;
	actions.uniforms = &uniforms;
	Error err = MaterialStorage::get_singleton()->shaders.compiler_sky.compile(RS::SHADER_SKY, code, &actions, path, gen_code);
	ERR_FAIL_COND_MSG(err != OK, "Shader compilation failed.");