BUG on calculating the min sample size

Hi there,
I am using chartjs v3.6.0 and moment (with [moment adapter](https://github.com/chartjs/chartjs-adapter-moment)) i faced an issue while i am trying to use this plugin. Here is the problem;

After some investigations i found the problem;

```javascript
function computeMinSampleSize(scale, pixels) {
let min = scale._length;
let prev, curr, i, ilen;

for (i = 1, ilen = pixels.length; i < ilen; ++i) {
min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1]));
}

for (i = 0, ilen = scale.ticks.length; i < ilen; ++i) {
curr = scale.getPixelForTick(i);
min = i > 0 ? Math.min(min, Math.abs(curr - prev)) : min; // here min value is becaming NaN because of curr and prev can be NaN
prev = curr;
}

return min;
}
```

My solution was (for very quick fix);

```javascript
function computeMinSampleSize(scale, pixels) {
let min = scale._length;
let prev, curr, i, ilen;

for (i = 1, ilen = pixels.length; i < ilen; ++i) {
min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1]));
}

for (i = 0, ilen = scale.ticks.length; i < ilen; ++i) {
curr = scale.getPixelForTick(i);
min = i > 0 && !isNaN(curr) && !isNaN(prev) ? Math.min(min, Math.abs(curr - prev)) : min; // add check for NaN values
prev = curr;
}

return min;
}
```

and the result is;

but as i see scale.getPixelForTick() always returns NaN and it can be because of wrong date parsing but anyway it should not cause wrong output.

This is all i found in couple of hours please add, share your thoughts and i hope it helps everyone who faced this issue!
Thank you.