Markdown text is rendered outside of Text bounding box

If a Text element has `textFormat` set to `Text.MarkdownText` and `pixelSize` set to `80px` with the following text:

```

1. Header

1. List

2. List

```

the list items will be partially rendered outside of their bounding box, but the header will remain within bounds.
Attached is a minimal reproduction code that contains a `Rectangle` with a child `Text` item. The rectangle's width and height are bound to `Text.contentWidth` and `Text.contentHeight`, respectively, along with a `TextEdit` to set the text on the `Text` item. There is also a slider to control the `pixelSize`. By moving the slider, the text size increases, causing some parts of the text to extend beyond the content size of the `Text` item.

One possible workaround is to set the pixel size to a constant value (e.g., 35px) and use `scale` to change the size. But I think is kind of not a right way to control the font size.