bug: [V1] Control with key: RuntimeError: Frozen controls cannot be updated.

[3mora2]

Duplicate Check

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

Describe the bug

failed update control, when append control with key to existing controls

Code sample

Code

import flet as ft


def main(page):
    def item(key) -> ft.Container:
        def change_bgcolor(e: ft.Event[ft.Container]):
            e.control.bgcolor = ft.Colors.GREY

        return ft.Container(
            ft.Text(key),
            width=100, height=100, bgcolor=ft.Colors.GREEN,
            on_click=change_bgcolor,
            key=ft.ScrollKey(key),  # Work Fine Without Key
        )

    def add_new():
        grid.controls.append(item(len(grid.controls)))

    grid = ft.ResponsiveRow(
        controls=[item(0), item(1), ]
    )
    page.add(ft.Column([
        ft.Row([ft.Button("New", on_click=add_new)]),
        grid
    ]))


if __name__ == '__main__':
    ft.run(
        main=main
    )

item with key > 1 not update

To reproduce

• run code
• click add new
• click on Container to change bgcolor

Expected behavior

No response

Screenshots / Videos

Captures

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Operating System

Windows

Operating system details

win 11

Flet version

flet[all]>=0.70.0.dev6561

Regression

No, it isn't

Suggestions

No response

Logs

Logs

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Additional details

No response