### 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
expr->array_size = constant.array_size;
								expr->array_declarations.push_back(decl);
								constant.initializer = static_cast<ConstantNode *>(expr);
							} else {
#ifdef DEBUG_ENABLED
								if (constant.type == DataType::TYPE_BOOL) {
									keyword_completion_context = CF_BOOLEAN;
								}
#endif 
								
								Node *expr = _parse_and_reduce_expression(nullptr, constants);
								if (!expr) {
									return ERR_PARSE_ERROR;
								}
#ifdef DEBUG_ENABLED
								if (constant.type == DataType::TYPE_BOOL) {
									keyword_completion_context = CF_GLOBAL_SPACE;
								}
#endif 
								if (expr->type == Node::NODE_TYPE_OPERATOR && static_cast<OperatorNode *>(expr)->op == OP_CALL) {
									OperatorNode *op = static_cast<OperatorNode *>(expr);
									for (int i = 1; i < op->arguments.size(); i++) {
										if (!_check_node_constness(op->arguments[i])) {
											_set_error(vformat(RTR("Expected constant expression for argument %d of function call after '='."), i - 1));
											return ERR_PARSE_ERROR;
										}
									}
								}
								constant.initializer = static_cast<ConstantNode *>(expr);
								if (!_compare_datatypes(type, struct_name, 0, expr->get_datatype(), expr->get_datatype_name(), expr->get_array_size())) {