Waiting for Launcher to settle after enabling test provider

I suspect that something happens in Launcher after enabling the provider
that causes "mismatched event sequence" errors.

This CL is to verify that.

Bug: 195031154
Test: presubmit
Change-Id: Ic22df5fa631b287b580f0aaf00c84cd408cb60b0
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 2ca40d8..bf6af08 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -248,6 +248,8 @@
         if (pm.getComponentEnabledSetting(cn) != COMPONENT_ENABLED_STATE_ENABLED) {
             if (TestHelpers.isInLauncherProcess()) {
                 pm.setComponentEnabledSetting(cn, COMPONENT_ENABLED_STATE_ENABLED, DONT_KILL_APP);
+                // b/195031154
+                SystemClock.sleep(5000);
             } else {
                 try {
                     final int userId = ContextUtils.getUserId(getContext());