Revert "Remove max aspect ratio."

 * We don't need this when target SDK is 29, see docs:
   If your app targets Android 8.0 (API level 26) or higher, it
   fills the entire screen, according to its layout.

This reverts commit b7abe063.

Change-Id: I9442b05b8c4d6213676943163e3c0b995047d303