[REF-3375] Accordion Item that depends on state var does not stay open unless value prop is set.

[masenf]

Describe the bug
When the value prop is not provided, the default generateUUID() is used, which generates a new unique identifier. The problem arises when the component has to re-render: the value is also re-generated. If opening the accordion item triggers some update that causes the item to re-render then it basically cannot stay open because the open state is tied to the value.

To Reproduce

import reflex as rx


class State(rx.State):
    """The app state."""
    sindex: int = 0


def index() -> rx.Component:
    # Welcome Page (Index)
    return rx.container(
        rx.color_mode.button(position="top-right"),
        rx.vstack(
            rx.heading("Welcome to Reflex!", size="9"),
            rx.accordion.root(
                rx.accordion.item(
                    header="Default value, cannot stay open",
                    content=f"When this component re-renders it gets a new value which is not considered open.",
                    on_click=State.set_sindex(0),
                    style={"--foo": State.sindex},
                    # value="1",
                ),
                rx.accordion.item(
                    header="Explicit value, stays open fine",
                    content=f"Even when this component has to re-render it stays open because value is constant.",
                    on_click=State.set_sindex(1),
                    style={"--foo": State.sindex},
                    value="2",
                ),
                width="300px",
            ),
            spacing="5",
            justify="center",
            min_height="85vh",
        ),
        rx.logo(),
    )


app = rx.App()
app.add_page(index)

Expected behavior
The accordion item's open state is not reset when re-rendering the component (due to style change or otherwise).

Screenshots
If applicable, add screenshots to help explain your problem.

Specifics (please complete the following information):

• Python Version: 3.11
• Reflex Version: 0.5.7
• OS: macOS 14

_REF-3375