RESTRICT AUTOMERGE: Backport Cut max duration for default transition to 1500

3 seconds is way too long, especially for tap jacking exploitation during animation. Cut it down to 1500 for a more tolerable experience.

Bug: 266433089
Test: manual
Flag: EXEMPT bug fix
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:1e9412266ede59c046b83ad3a3fbfcaba94a1787
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:8740d28bfeb63dd021b390a8c7a7c7a6f25c362c
Merged-In: I3b33e47743fc2dee93cb3cb6363626698868beae
Change-Id: I3b33e47743fc2dee93cb3cb6363626698868beae