A double "tick" is required to generate waveform

## Describe the bug

A double `tick` is required to create a new timestamp.

## To Reproduce

Use code:

```dart
import 'package:rohd/rohd.dart';

class ExampleModule extends Module {
ExampleModule(Logic inputA) {
inputA = addInput('input_a', inputA);
final out = addOutput('out');

Combinational([
out < inputA,
]);
}

Logic get out => output('out');
}

Future main() async {
Logic inputA = Logic();
final exampleModule = ExampleModule(inputA);
await exampleModule.build();
WaveDumper(exampleModule);
SimpleClockGenerator(2);
for (var i = 0; i < 10; ++i) {
inputA.inject(i % 2);
await Simulator.tick();
//await Simulator.tick();
print(exampleModule.out.value);
}
}
```

Open `waves.vcd` in viewer.

## Expected behavior

You can watch the history of signal changes.

## Actual behavior

There is no signal history.

## Additional details

```text
Dart SDK version: 2.18.0 (stable) (Fri Aug 26 10:22:54 2022 +0000) on "linux_x64"
```

```yaml
name: package

environment:
sdk: '>=2.14.0 <3.0.0'

dependencies:
rohd: ^0.3.2
```

## For @mkorbel1

I like how actively you participate in resolving my issues, but I do not want to be intrusive. In the course of using ROHD, I noticed some roughness, and also had ideas for improving some aspects. I will try to gradually share them with you.

As a result, I understand the limited resources of the ROHD project, so please process my questions and suggestions at your own pace. Personally, I have not encountered a single problem that would block further work. And yes, ROHD is just great.