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 執行提供的 Python 重現程式，並在 Chrome 或 Edge 中比較 Scattergl 與 Scatter。追蹤 fill='tozeroy' 的 Scattergl 渲染路徑；當填滿區域到達 y=0 而不是資料最小值時，即表示完成。