LogcatManagerService: Diff timeout for debuggable

Set a shorter timeout (1 min) for debuggable builds.
The timeout for user build is still 5 min.

Bug: 197901557
Test: manually
Ignore-AOSP-First: pending fix for logcat privacy issue
Change-Id: Ia01062d67cb9b300e5bebc4eb0dbe86ec445798e