Update tests for new adjustment key defaults

Test: NotificationAssistantsTest
Fixes: 423894558
Flag: android.app.nm_summarization_onboarding_ui
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:35754a0c200514cc4c593e607bc948133ff4643b)
Merged-In: I8fd6dd30f9071cf7f8d61af71ffeca5fd77709af
Change-Id: I8fd6dd30f9071cf7f8d61af71ffeca5fd77709af