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 BUGFIX
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:71d67882398e9a28c268e19d5a5d66ff7632c4ed
Merged-In: I691b7746a8b413e956fdb75c7809904c70853552
Change-Id: I691b7746a8b413e956fdb75c7809904c70853552