enabled property on Tab doesn't work

[Moosems]

Describe the bug

import tukaan


app = tukaan.App()
window = tukaan.MainWindow(title="Test TabView widget")

# Create tabview
tabview = tukaan.TabView(window)
tabview.grid(margin=20)

# Create tabs
tab_1 = tabview.Tab("Tab 1")
tab_2 = tabview.Tab("Tab 2")

# Add tab contents
button_1 = tukaan.Button(tab_1, "Button in tab 1")
button_1.grid(margin=20)

button_2 = tukaan.Button(tab_2, "Button in tab 2")
button_2.grid(margin=20)

tab_1.enabled = False

app.run()

File ... , line 85, in enabled
self._set(state="normal" if value else "disabled")
    ^^^^^^^^^
AttributeError: 'Tab' object has no attribute '_set'

Expected behavior

Doesn't crash :)

Operating system

macOS 13 (Ventura)

Extra details about your system

No response