[MaterialAutoCompleteTextView] Dropdown height calculated incorrectly when added to a dialog

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**Description:**

When `MaterialAutoCompleteTextView` is added as a custom view to a dialog, the dropdown height does not account for the IME. A good portion of the dropdown items end up below the keyboard.

**Expected behavior:**

In this screen recording, the last few items in the dropdown are obscured by the keyboard, but should ideally not happen.

https://user-images.githubusercontent.com/646253/225210028-4d8b37eb-94f8-4f44-8be2-952f7e4ec1d4.mp4

**Source code:**

This can be reproduced with a small modification to the official catalog app in this repo.

1. Clone this repo (I was testing against `master` at commit 359580b6c1160301967ebdededb1011c1133b42c)
2. Apply this patch: https://gist.github.com/chenxiaolong/e3e163d1e1b8b3cb7a56f4fb4af19131
* This modifies the "Custom View" dialog sample to have a `MaterlaAutoCompleteTextView` and increases the number of dropdown elements to 25
3. Navigate to Dialogs -> Demo -> Custom View
4. Tap on the text box
5. The dropdown items are obscured by the keyboard

**Android API version:** 33

**Material Library version:** Both 1.8.0 and `master` (commit 359580b6c1160301967ebdededb1011c1133b42c) exhibit this issue

**Device:** Google Pixel 7 Pro (Android 13 build `TQ1A.230205.001.D2`)

Reproduce the issue in the official catalog app through Dialogs -> Demo -> Custom View, using the described MaterialAutoCompleteTextView modification and Android API 33 setup. Start at MaterialAutoCompleteTextView's dropdown-height calculation and inspect how the IME is accounted for; done means the dropdown items remain visible above the keyboard in the dialog.

Written by the indexing model from the issue text.