Update private space setup string and loading screen title

This includes below changes based on the updated UX mocks:
- Add one more loading screen in setup flow
- Update feature intro text on Setup page
- To swap order of bullets on the setup intro screen
- Update "Private Space" to "private space" in setup flow screens

go/ss/7pVGBSPqezDek47.png
go/ss/ADLX8aXAAGgYQHD.png
go/ss/tYtrGypBgRuXM9V.png
go/ss/3zZfij6JDpudwYR.png
go/ss/BFtWegFZyTueQoT.png
Recording link - b/313654776#comment5

Bug: 313654776, 313882412, 313655290
Test: Verify title and text is same as UX flow
Change-Id: I6a985c4fd6ecbe8ddd11e36bf76a2a9cc8427ef5

res/xml/privatespace_setup_education_entries.xml

@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2023 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.
-  -->
-
-<ItemGroup
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <Item
-        android:enabled="false"
-        android:icon="@drawable/ic_apps"
-        android:title="@string/privatespace_access_bottom_text"
-        app:sudIconTint="?android:attr/textColorSecondary"/>
-
-    <Item
-        android:enabled="false"
-        android:icon="@drawable/ic_lock_24dp"
-        android:title="@string/privatespace_protected_lock_text"
-        app:sudIconTint="?android:attr/textColorSecondary"/>
-
-    <Item
-        android:enabled="false"
-        android:icon="@drawable/ic_notifications"
-        android:title="@string/privatespace_hidden_notifications_text"
-        app:sudIconTint="?android:attr/textColorSecondary"/>
-</ItemGroup>