Scattergl doesn't fill to zero y properly

Using the fill tozeroy on a Scattergl fills to a minima, rather than zero. No such issue is present in Scatter.

The issue was found with Python using Plotly version 4.14.1 and is present in both Chrome and Edge. The following code is able to reproduce the issue:

import plotly.graph_objects as go

def squared(x):
    return x**2

x = list(range(-5, 5))
y = [squared(i)-3 for i in x]

fig = go.Figure(
    go.Scattergl(
        x=x,
        y=y,
        fill='tozeroy'
    )
)

fig.show()

首先使用 Plotly 4.14.1 运行提供的 Python 复现代码，并在 Chrome 或 Edge 中比较 Scattergl 与 Scatter。跟踪 fill='tozeroy' 的 Scattergl 渲染路径；当填充区域到达 y=0 而不是数据最小值时，即表示完成。