Make AppListPage testable

Users could now overwrite AppListPage's appList param to replace the
real implementation with fake for testing.

Bug: 260660819
Test: Unit test
Change-Id: Ia25fecf6d98f7ed18de020f855b9cd31a7199217
diff --git a/packages/SettingsLib/Spa/testutils/Android.bp b/packages/SettingsLib/Spa/testutils/Android.bp
index de87dde..2c1e1c2 100644
--- a/packages/SettingsLib/Spa/testutils/Android.bp
+++ b/packages/SettingsLib/Spa/testutils/Android.bp
@@ -24,7 +24,9 @@
     srcs: ["src/**/*.kt"],
 
     static_libs: [
+        "SpaLib",
         "androidx.arch.core_core-testing",
+        "androidx.compose.runtime_runtime",
         "androidx.compose.ui_ui-test-junit4",
         "androidx.compose.ui_ui-test-manifest",
         "mockito",