[BottomSheet] PeekHeight measured incorrectly during first layout when marginTopSystemWindowInsets is set to true

Description:

When application is in edge-to-edge mode, it is expected that peekHeight will be increased by the bottom system window inset when paddingBottomSystemWindowInsets=true. However, if you set marginTopSystemWindowInsets to true at the same time, then at first peekHeight is going to be measured incorrectly - it'll be decreased by the size of the top inset. Once you expand the sheet and collapse it again, it'll be collapsed to the correctly measured peek height.

Expected behavior:

Peek height should be not effected by the top system window inset, when marginTopSystemWindowInsets=true during every layout.

I suspect that https://github.com/material-components/material-components-android/pull/2094 might fix the issue.

Source code:

Here's the project which demonstrates the issue https://github.com/Lingviston/bottom-sheet-peek-height-bu/tree/master

The short recording can be found there in /demo folder.

Android API version: Any

Material Library version: 1.9.0

Device: Pixel 4 API 28, Pixel 2 API 31

Inizia con il progetto di riproduzione collegato bottom-sheet-peek-height-bu e la registrazione nella relativa cartella /demo. Riproduci il comportamento del primo layout con entrambe le opzioni system-inset abilitate, quindi esamina l’implementazione di BottomSheet e i test pertinenti per individuare il punto in cui l’inset superiore influisce su peekHeight. Il lavoro è completato quando il layout collapsed iniziale e quelli successivi usano la stessa peekHeight correttamente adattata agli inset.