### 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)

iterate_opcode = GDScriptFunction::OPCODE_ITERATE_PACKED_COLOR_ARRAY;
					break;
				default:
					break;
			}
		} else {
			begin_opcode = GDScriptFunction::OPCODE_ITERATE_BEGIN_OBJECT;
			iterate_opcode = GDScriptFunction::OPCODE_ITERATE_OBJECT;
		}
	}
	
	append_opcode(begin_opcode);
	append(counter);
	append(container);
	append(iterator);
	for_jmp_addrs.push_back(opcodes.size());
	append(0); 
	append_opcode(GDScriptFunction::OPCODE_JUMP);
	append(opcodes.size() + 6); 
	
	int continue_addr = opcodes.size();
	continue_addrs.push_back(continue_addr);
	append_opcode(iterate_opcode);
	append(counter);
	append(container);
	append(iterator);
	for_jmp_addrs.push_back(opcodes.size());
	append(0); 
}
void GDScriptByteCodeGenerator::write_endfor() {