### 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_OP_ASSIGN) {
						if (uniform.array_size > 0) {
							_set_error(RTR("Setting default values to uniform arrays is not supported."));
							return ERR_PARSE_ERROR;
						}
						Node *expr = _parse_and_reduce_expression(nullptr, constants);
						if (!expr) {
							return ERR_PARSE_ERROR;
						}
						if (expr->type != Node::NODE_TYPE_CONSTANT) {
							_set_error(RTR("Expected constant expression after '='."));
							return ERR_PARSE_ERROR;
						}
						ConstantNode *cn = static_cast<ConstantNode *>(expr);
						uniform.default_value.resize(cn->values.size());
						if (!convert_constant(cn, uniform.type, uniform.default_value.ptrw())) {
							_set_error(vformat(RTR("Can't convert constant to '%s'."), get_datatype_name(uniform.type)));
							return ERR_PARSE_ERROR;
						}
						tk = _get_token();
					}
					shader->uniforms[name] = uniform;
#ifdef DEBUG_ENABLED
					if (check_warnings && HAS_WARNING(ShaderWarning::UNUSED_UNIFORM_FLAG)) {
						used_uniforms.insert(name, Usage(tk_line));
					}
#endif 
					
					uniform_scope = ShaderNode::Uniform::SCOPE_LOCAL;