Incorrect legend style with x unify hovermode

[FabioMosella]

Hello

I noticed that something is incorrect with the legend styling, especially when we use the x unify hovermode.

Here is a short example:

import plotly.graph_objects as go

x = ["A", "B"]
fig = go.Figure(data=[
    go.Bar(
        x=x, 
        y=[1, 1],
        marker=dict(color=["blue", "red"], pattern_shape=["/", ""]),
        name="First Bar"
    ),
    go.Bar(
        x=x, 
        y=[-1, -1],
        marker=dict(color=["green", "purple"], pattern_shape=["/", ""]),
        name="Second Bar",
    ),
])

fig.update_layout(hovermode="x unified")
fig.show()

As we can see, the second bar uses the "general" legend style, which leads to an incorrect style for the items on the right.
plotly version = 5.24.1

And thank you for your amazing work!