### 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 error_str;
}
Vector<ShaderLanguage::FilePosition> ShaderLanguage::get_include_positions() {
	return include_positions;
}
int ShaderLanguage::get_error_line() {
	return error_line;
}
ShaderLanguage::ShaderNode *ShaderLanguage::get_shader() {
	return shader;
}
ShaderLanguage::ShaderLanguage() {
	nodes = nullptr;
	completion_class = TAG_GLOBAL;
#ifdef DEBUG_ENABLED
	warnings_check_map.insert(ShaderWarning::UNUSED_CONSTANT, &used_constants);
	warnings_check_map.insert(ShaderWarning::UNUSED_FUNCTION, &used_functions);
	warnings_check_map.insert(ShaderWarning::UNUSED_STRUCT, &used_structs);
	warnings_check_map.insert(ShaderWarning::UNUSED_UNIFORM, &used_uniforms);
	warnings_check_map.insert(ShaderWarning::UNUSED_VARYING, &used_varyings);
	warnings_check_map2.insert(ShaderWarning::UNUSED_LOCAL_VARIABLE, &used_local_vars);
#endif 
}
ShaderLanguage::~ShaderLanguage() {
	clear();
}