CupertinoSegmentedButton places segments not in listed order

[roob1e]

Duplicate Check

• I have searched the opened issues and there are no duplicates

Describe the bug

CuperinoSegmentedButton's controls are assigned with elements of a certain list:

controls = [ft.Text(subject) for subject in request]

But when I'm adding this class to my app, elements in button end up mixed up.

Code sample

Code

import flet as ft

def main(page: ft.Page):
    page.window.width = 1920
    page.window.height = 1080
    page.window.maximized = True
    page.window.resizable = False
    page.theme_mode = "DARK"
    
    request = list({"1", "2", "3", "4"})
    
    selection_bar = ft.CupertinoSegmentedButton(
            selected_color = ft.Theme.primary_color_light,
            padding = ft.padding.all(20),
            width = 200,
            unselected_color = ft.colors.GREY_900,
            on_change = lambda e: print(e),
            controls = [ft.Text(subject) for subject in request]
    )
    
    c1 = ft.Container(
        content = selection_bar,
        alignment = ft.alignment.top_center
    )
    
    page.add(c1)
    page.update()

ft.app(target = main)      

To reproduce

1. Run the code;
2. Notice the difference between list sequence and final sequence.

Expected behavior

The order of the list elements matches the placement of the elements in the button.

Screenshots / Videos

Captures

Operating System

Windows

Operating system details

11

Flet version

0.24.1

Regression

I'm not sure / I don't know

Suggestions

No response

Logs

Logs

[Paste your logs here]

Additional details

No response

[ndonkoHenri]

Python is the cause, not Flet.
That's how python sets function (they dont't keep the provided order).

Try printing your request list somewhere in your code and you will notice what I mean.