[REF-2587] Ignore top-level theme appearance

[masenf]

From the Radix docs, it is not recommended to actually set appearance, but instead use next-themes to set and switch the appearance dynamically.

Because Reflex already compiles the top-level theme into the next-themes ThemeProvider, we can blank out the appearance prop after compiling contexts.js to avoid a mismatch between the selected app appearance and the appearance in the rx.theme when displaying overlay components.

Fix #2992

---

Bonus: fix the pyi_generator with pre-commit to stop creating .pyi files for those in the EXCLUDED_FILES list

---

Sample code

import reflex as rx


def dialogme():
    return rx.dialog.root(
        rx.dialog.trigger(rx.button("Dialog")),
        rx.dialog.content(
            rx.dialog.title("Foo"),
            rx.dialog.description("This is a dialog"),
            rx.dialog.close(
                rx.button("Close"),
            ),
        ),
    )


def index() -> rx.Component:
    return rx.vstack(
        rx.color_mode.button(rx.color_mode.icon()),
        dialogme(),
        rx.theme(
            dialogme(),
            appearance="dark",
        ),
        rx.theme(
            dialogme(),
            appearance="light",
        ),
    )


app = rx.App(theme=rx.theme(appearance="dark"))
app.add_page(index)

[linear]

REF-2587 Dialog is still in light mode even though the app is now in dark mode