### 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
bool found = false;
					while (builtin_func_defs[idx].name) {
						if (builtin_func_defs[idx].tag == p_block->block_tag && builtin_func_defs[idx].name == identifier) {
							found = true;
							break;
						}
						idx++;
					}
					if (!found) {
						_set_error(vformat(RTR("Unknown identifier in expression: '%s'."), String(identifier)));
						return nullptr;
					}
				} else {
					if (!_find_identifier(p_block, false, p_function_info, identifier, &data_type, &ident_type, &is_const, &array_size, &struct_name)) {
						if (identifier == "SCREEN_TEXTURE" || identifier == "DEPTH_TEXTURE" || identifier == "NORMAL_ROUGHNESS_TEXTURE") {
							String name = String(identifier);
							String name_lower = name.to_lower();
							_set_error(vformat(RTR("%s has been removed in favor of using hint_%s with a uniform.\nTo continue with minimal code changes add 'uniform sampler2D %s : hint_%s, filter_linear_mipmap;' near the top of your shader."), name, name_lower, name, name_lower));
							return nullptr;
						}
						_set_error(vformat(RTR("Unknown identifier in expression: '%s'."), String(identifier)));
						return nullptr;
					}
					if (is_const_decl && !is_const) {
						_set_error(RTR("Expected constant expression."));
						return nullptr;
					}
					if (ident_type == IDENTIFIER_VARYING) {
						TkPos prev_pos = _get_tkpos();
						Token next_token = _get_token();