Reset `TASKBAR_EDU_SEEN` preference.

The EDU has been updated to support both transient and persistent
taskbar cases, so we should show it to the use again.

Test: Manual
Bug: 217261955
Change-Id: Ied59e6226c4f9599ad98333012313db57edc7c1f
diff --git a/src/com/android/launcher3/util/OnboardingPrefs.java b/src/com/android/launcher3/util/OnboardingPrefs.java
index d942b7a..f4893c7 100644
--- a/src/com/android/launcher3/util/OnboardingPrefs.java
+++ b/src/com/android/launcher3/util/OnboardingPrefs.java
@@ -41,7 +41,7 @@
     public static final String SEARCH_KEYBOARD_EDU_SEEN = "launcher.search_edu_seen";
     public static final String SEARCH_SNACKBAR_COUNT = "launcher.keyboard_snackbar_count";
     public static final String SEARCH_ONBOARDING_COUNT = "launcher.search_onboarding_count";
-    public static final String TASKBAR_EDU_SEEN = "launcher.taskbar_edu_seen";
+    public static final String TASKBAR_EDU_SEEN = "launcher.taskbar_edu_seen2";
     public static final String ALL_APPS_VISITED_COUNT = "launcher.all_apps_visited_count";
     public static final String QSB_SEARCH_ONBOARDING_CARD_DISMISSED = "launcher.qsb_edu_dismiss";
     // When adding a new key, add it here as well, to be able to reset it from Developer Options.