### Godot version

4.0.3

### System information

Win7

### Issue description

![image](https://github.com/godotengine/godot/assets/28286958/abec9d3c-e078-424c-9430-d9fe8897aad6)


### Steps to reproduce

1. Create shader
2. Add uint with hex, e.g. 0xffffu

### Minimal reproduction project

N/A
if (tk.type != TK_SEMICOLON) {
						_set_expected_error(";");
						return ERR_PARSE_ERROR;
					}
#ifdef DEBUG_ENABLED
					keyword_completion_context = CF_GLOBAL_SPACE;
#endif 
					completion_type = COMPLETION_NONE;
					current_uniform_hint = ShaderNode::Uniform::HINT_NONE;
					current_uniform_filter = FILTER_DEFAULT;
					current_uniform_repeat = REPEAT_DEFAULT;
					current_uniform_instance_index_defined = false;
				} else { 
					ShaderNode::Varying varying;
					varying.type = type;
					varying.precision = precision;
					varying.interpolation = interpolation;
					varying.tkpos = prev_pos;
					varying.array_size = array_size;
					tk = _get_token();
					if (tk.type != TK_SEMICOLON && tk.type != TK_BRACKET_OPEN) {
						if (array_size == 0) {
							_set_expected_error(";", "[");
						} else {
							_set_expected_error(";");
						}
						return ERR_PARSE_ERROR;
					}
					if (tk.type == TK_BRACKET_OPEN) {
						Error error = _parse_array_size(nullptr, constants, true, nullptr, &varying.array_size, nullptr);