Include AndroidX test rules in Robolectric tests

Test: atest Launcher3RoboTests
Bug: 297950111
Flag: N/A
Change-Id: I6f3c9ddeac9cb676644b3a236a00575c4faaa921
diff --git a/tests/Android.bp b/tests/Android.bp
index 24ae158..01e8224 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -246,6 +246,7 @@
         "androidx.test.uiautomator_uiautomator",
         "androidx.core_core-animation-testing",
         "androidx.test.ext.junit",
+        "androidx.test.rules",
         "mockito-robolectric-prebuilt",
         "mockito-kotlin2",
         "platform-parametric-runner-lib",