[MaterialTimePicker] Buttons at the bottom are getting cut off

Description: MaterialTimePicker is getting its buttons cut off
at the bottom in the 1.11.x releases, this looks correct in 1.10.0-beta01
so it may be a regression.

I suspect this might improve if those two buttons are also constrained
to parent at their bottom edge.

Expected behavior: The expected behaviour is that those buttons
would not be clipped. Here are two screenshots - one from 1.10 and
one from 1.11, notice how the dialog's height is less than it was in 1.10
and the buttons are clipped:

1.10	1.11

Source code: material_timepicker_dialog.xml; This may be due to
commit d10201dc88f919421b3bc4d8d7aa432de685c892 which updated the layout

Minimal sample app repro: n/a

Android API version: 33

Material Library version: 1.11.0-alpha02

Device: Pixel 6 emulator

To help us triage faster, please check to make sure you are using the latest version of the library.

We also happily accept pull requests.

Inizia da material_timepicker_dialog.xml e confronta i suoi constraints attuali con il layout precedente al commit d10201dc88f919421b3bc4d8d7aa432de685c892. Controlla come sono vincolati i pulsanti inferiori e verifica il dialog MaterialTimePicker su Android API 33. Il lavoro è completato quando entrambi i pulsanti sono completamente visibili anziché tagliati.