Group final fields together

Address the review comment at
https://googleplex-android-review.git.corp.google.com/c/platform/frameworks/base/+/9313959/2/services/core/java/com/android/server/PackageWatchdog.java#143

Bug: 140358475
Test: atest PackageWatchdogTest

Change-Id: I0aae51cd064531afbb8286c132885ff99f535727
1 file changed