### 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 check_warnings;
}
void ShaderLanguage::set_warning_flags(uint32_t p_flags) {
	warning_flags = p_flags;
}
uint32_t ShaderLanguage::get_warning_flags() const {
	return warning_flags;
}
#endif 
Error ShaderLanguage::compile(const String &p_code, const ShaderCompileInfo &p_info) {
	clear();
	is_shader_inc = p_info.is_include;
	code = p_code;
	global_shader_uniform_get_type_func = p_info.global_shader_uniform_type_func;
	varying_function_names = p_info.varying_function_names;
	nodes = nullptr;
	shader = alloc_node<ShaderNode>();
	Error err = _parse_shader(p_info.functions, p_info.render_modes, p_info.shader_types);
#ifdef DEBUG_ENABLED
	if (check_warnings) {
		_check_warning_accums();
	}
#endif 
	if (err != OK) {
		return err;
	}
	return OK;
}
Error ShaderLanguage::complete(const String &p_code, const ShaderCompileInfo &p_info, List<ScriptLanguage::CodeCompletionOption> *r_options, String &r_call_hint) {