add missing jar

Author: LongCatIsLooong

shell/platform/android/embedding_bundle/build.gradle

@@ -61,6 +61,8 @@ android {
     embeddingTesting "org.robolectric:android-all:9-robolectric-4913185-2"
     // Get robolectric shadows for SDK=16 used by PlatformPluginTest.
     embeddingTesting_v16 "org.robolectric:android-all:4.1.2_r1-robolectric-r1"
+    // Get robolectric shadows for SDK=16 used by PlatformPluginTest.
+    embeddingTesting_v16 "org.robolectric:android-all-8.0.0_r4-robolectric-r1"
     embeddingTesting "androidx.fragment:fragment-testing:1.1.0"
     embeddingTesting "org.mockito:mockito-all:1.10.19"
     embeddingTesting ("org.robolectric:robolectric:4.3") {