Initial unit tests for BubbleStackView

Fixes: 321265700
Test: atest BubbleStackViewTest
Change-Id: I0832d53f39527c5d0b0b89e868192a3835b77d77
diff --git a/libs/WindowManager/Shell/Android.bp b/libs/WindowManager/Shell/Android.bp
index a12fa5f..e74ea10 100644
--- a/libs/WindowManager/Shell/Android.bp
+++ b/libs/WindowManager/Shell/Android.bp
@@ -205,6 +205,8 @@
     srcs: [
         "multivalentTests/src/**/*.kt",
     ],
+    // TODO(b/323188766): Include BubbleStackViewTest once the robolectric issue is fixed.
+    exclude_srcs: ["multivalentTests/src/com/android/wm/shell/bubbles/BubbleStackViewTest.kt"],
     static_libs: [
         "junit",
         "androidx.test.runner",