How to add a static shape next to legend menu

[Youp]

HI,
the code :

import plotly.express as px 
import pandas as pd


data = {'x': [1.5, 1.6, -1.2],
        'y': [21, -16, 46],
        'circle-size': [10, 5, 6],
        'circle-color': ["red","red","green"],
        'tttt': ["ggg","vvvv","rrrr"],
        
        }

# Create DataFrame
df = pd.DataFrame(data)
fig = px.scatter(
    df,
    x="x", 
    y="y", 
    color="circle-color",
    size='circle-size',
    hover_name="tttt",
    # text="tttt",
    color_discrete_map={"red": "red", "green": "green"}
) 
fig.update_layout(legend=dict(
        orientation="h",
        yanchor="bottom",
        y=1.02,
        xanchor="right",
        x=0.39
    ))

# fig.add_shape(
#     showlegend=True,
#     type="circle",
#     line=dict(
#         color="gray",
#         width=2,
#     ),
#     fillcolor="gray",
#     x0=2,
#     x1=4,
#     y0=4.5,
#     y1=5,
# )
fig

result :

now what I’m trying to do is add an extra shape next to the menu above, and here’s what I want to add :

is this possible please ?