Hardcode ActionBar height to avoid changes while emulating

Test: Presubmits passing
Bug: 284210693
Flag: NA
Change-Id: If3fdb74703f57bfc5c7afbb38caa2acd5b7bd189

tests/AndroidManifest-common.xml

@@ -149,7 +149,8 @@
             android:name="com.android.launcher3.testcomponent.BaseTestingActivity"
             android:label="LauncherTestApp"
             android:exported="true"
-            android:taskAffinity="com.android.launcher3.testcomponent.Affinity1">
+            android:taskAffinity="com.android.launcher3.testcomponent.Affinity1"
+            android:theme="@style/Theme.TestActivities">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>

tests/res/values/styles.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright (C) 2024 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<resources>
+    <style name="Theme.TestActivities" parent="@android:style/Theme.DeviceDefault.DayNight">
+        <!-- Hardcoded ActionBar height to avoid changes while emulating -->
+        <!-- (56dp - default for handheld) -->
+        <item name="android:actionBarSize">168px</item>
+    </style>
+</resources>