### Godot version

4.0 Beta10

### System information

Windows 10, Vulkan, GTX1060

### Issue description

`PropertyTweener`'s methods' return value are not discarded and effect the unary operator at next line.

In Editor:
![in_editor](https://user-images.githubusercontent.com/61624558/210715100-04bdf283-7954-4be3-94ca-338987b24c5b.png)


In cpp:
![in_cpp](https://user-images.githubusercontent.com/61624558/210715127-519f6d54-fc15-468f-9aca-ba7d387a5a7b.png)


### Steps to reproduce

Just run the Minimal reproduction project.

### Minimal reproduction project

[Bug Report.zip](https://github.com/godotengine/godot/files/10349829/Bug.Report.zip)

all_have_type = false;
					break;
				} else if (element_type != this_element_type) {
					if (!is_type_compatible(element_type, this_element_type, false)) {
						if (is_type_compatible(this_element_type, element_type, false)) {
							
							element_type = this_element_type;
						} else {
							
							all_same_type = false;
							break;
						}
					}
				}
			}
		}
		if (all_same_type) {
			element_type.is_constant = false;
			array_type.set_container_element_type(element_type);
		} else if (all_have_type) {
			push_error(vformat(R"(Variant array is not compatible with an array of type "%s".)", p_base_type.get_container_element_type().to_string()), p_array_literal);
		}
	}
	
	p_array_literal->set_datatype(array_type);
}
void GDScriptAnalyzer::reduce_assignment(GDScriptParser::AssignmentNode *p_assignment) {
	reduce_expression(p_assignment->assignee);
	reduce_expression(p_assignment->assigned_value);
	if (p_assignment->assigned_value == nullptr || p_assignment->assignee == nullptr) {