### 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 (keyword_completion_context & CF_PRECISION_MODIFIER) {
						keyword_completion_context ^= CF_PRECISION_MODIFIER;
					}
					if (_lookup_next(next)) {
						if (is_token_datatype(next.type)) {
							keyword_completion_context = CF_UNSPECIFIED;
						}
					}
#endif 
				}
				if (shader->structs.has(tk.text)) {
					if (is_uniform) {
						_set_error(vformat(RTR("The '%s' data type is not supported for uniforms."), "struct"));
						return ERR_PARSE_ERROR;
					} else {
						_set_error(vformat(RTR("The '%s' data type is not allowed here."), "struct"));
						return ERR_PARSE_ERROR;
					}
				}
				if (!is_token_datatype(tk.type)) {
					_set_error(RTR("Expected data type."));
					return ERR_PARSE_ERROR;
				}
				type = get_token_datatype(tk.type);
				if (precision != PRECISION_DEFAULT && _validate_precision(type, precision) != OK) {
					return ERR_PARSE_ERROR;
				}
				if (type == TYPE_VOID) {
					_set_error(vformat(RTR("The '%s' data type is not allowed here."), "void"));
					return ERR_PARSE_ERROR;