Chart Rendering seems incorrect

### Expected behavior

When I am testing my strategy, I noticed the strategy was placing order at odd places on the charts. On the closer inspection, I think the OHLC rendering on the chart is incorrect

If you checked the time 10/17 21:05 PM

Correct data: Close = 1072.25

I expect to see the same data on chart.

### Code sample

```python

```

### Actual behavior

Incorrect data rendered on chart: Close = 1071.192

Any idea on why this is happening? Is it due to some misalignment issue?

### Additional info, steps to reproduce, full crash traceback, screenshots

_No response_

### Software versions

- `backtesting.__version__`: 0.6.5
- `pandas.__version__`: 2.3.2
- `numpy.__version__`: 2.2.6
- `bokeh.__version__`: 3.8.0
- OS: MacOS

Start by reproducing the 10/17 21:05 chart discrepancy with backtesting 0.6.5, pandas 2.3.2, numpy 2.2.6, and bokeh 3.8.0, then compare the source OHLC value with the rendered chart value. Done means identifying the rendering or alignment cause and making the chart show the expected close of 1072.25.

Written by the indexing model from the issue text.