Add integration test for platform interaction (#11580)

dev/devicelab/manifest.yaml

diff --git a/dev/devicelab/manifest.yaml b/dev/devicelab/manifest.yaml
index 4cc1422..c06e442 100644
--- a/dev/devicelab/manifest.yaml
+++ b/dev/devicelab/manifest.yaml
@@ -65,6 +65,12 @@
     stage: devicelab
     required_agent_capabilities: ["has-android-device"]
 
+  platform_interaction_test:
+    description: >
+      Checks platform interaction on Android.
+    stage: devicelab
+    required_agent_capabilities: ["has-android-device"]
+
   platform_channel_sample_test:
     description: >
      Runs a driver test on the Platform Channel sample app on Android.
@@ -161,6 +167,12 @@
     stage: devicelab_ios
     required_agent_capabilities: ["has-ios-device"]
 
+  platform_interaction_test_ios:
+    description: >
+      Checks platform interaction on iOS.
+    stage: devicelab_ios
+    required_agent_capabilities: ["has-ios-device"]
+
   platform_channel_sample_test_ios:
     description: >
       Runs a driver test on the Platform Channel sample app on iOS.