Update the All apps label to "Apps list"

Set the AccessibilityNodeInfo containerTitle to improve a11y for users
in predictionRow.

See expected behavior suggestion in  https://b.corp.google.com/issues/379640673#comment1

Video
Quickstep launcher: http://recall/-/cOtJfHR6buEyEHnRyCqzVE/eugH3ID7eenOuLwTszaLHk

Pixel launcher: http://recall/-/cOtJfHR6buEyEHnRyCqzVE/fftzwMRCy6N3o7OcwiGMdk

Bug: 379640673
Test: Manual
Flag: EXEMPT a11y bugfix
Change-Id: I23a8a142afb213c0801402a56bc134bc14f0f97d

quickstep/res/layout/floating_header_content.xml

@@ -3,8 +3,8 @@
 
     <com.android.launcher3.appprediction.PredictionRowView
         android:id="@+id/prediction_row"
-        android:accessibilityPaneTitle="@string/title_app_suggestions"
         android:layout_width="match_parent"
+        android:importantForAccessibility="yes"
         android:layout_height="wrap_content" />
 
     <com.android.launcher3.appprediction.AppsDividerView

quickstep/src/com/android/launcher3/appprediction/PredictionRowView.java

@@ -16,12 +16,16 @@
 
 package com.android.launcher3.appprediction;
 
+import static android.os.Build.VERSION_CODES.UPSIDE_DOWN_CAKE;
+
 import android.content.Context;
 import android.graphics.Canvas;
+import android.os.Build;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.LinearLayout;
 
 import androidx.annotation.NonNull;
@@ -90,6 +94,14 @@ public class PredictionRowView<T extends Context & ActivityContext>
         updateVisibility();
     }
 
+    @Override
+    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
+        super.onInitializeAccessibilityNodeInfo(info);
+        if (Build.VERSION.SDK_INT >= UPSIDE_DOWN_CAKE) {
+            info.setContainerTitle(mActivityContext.getString(R.string.title_app_suggestions));
+        }
+    }
+
     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();

quickstep/src/com/android/launcher3/uioverrides/states/AllAppsState.java

@@ -102,7 +102,7 @@ public class AllAppsState extends LauncherState {
 
     @Override
     public int getTitle() {
-        return R.string.all_apps_label;
+        return R.string.all_apps_list_label;
     }
 
     @Override

res/values/strings.xml

@@ -190,6 +190,8 @@
     <!-- Label for the header text of the All Apps section in All Apps view, used to separate Predicted Apps and Actions section from All Apps section. [CHAR_LIMIT=50] -->
     <string name="all_apps_label">All apps</string>
 
+    <string name="all_apps_list_label">Apps list</string>
+
     <!-- Popup items -->
     <!-- Text to display as the header above notifications. [CHAR_LIMIT=30] -->
     <string name="notifications_header">Notifications</string>