### 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)

String result;
	switch (p_repeat) {
		case REPEAT_DISABLE: {
			result = "repeat_disable";
		} break;
		case REPEAT_ENABLE: {
			result = "repeat_enable";
		} break;
		default: {
		} break;
	}
	return result;
}
bool ShaderLanguage::is_token_nonvoid_datatype(TokenType p_type) {
	return is_token_datatype(p_type) && p_type != TK_TYPE_VOID;
}
void ShaderLanguage::clear() {
	current_function = StringName();
	last_name = StringName();
	last_type = IDENTIFIER_MAX;
	current_uniform_group_name = "";
	current_uniform_subgroup_name = "";
	current_uniform_hint = ShaderNode::Uniform::HINT_NONE;
	current_uniform_filter = FILTER_DEFAULT;
	current_uniform_repeat = REPEAT_DEFAULT;
	current_uniform_instance_index_defined = false;
	completion_type = COMPLETION_NONE;
	completion_block = nullptr;
	completion_function = StringName();