[Physical Keyboard][A11y Page] Add Bounce keys dialog

1.Add dialog for adjust bounce key to different values.
demo video: b/346949547#comment24.
2.Update summary text.
3.When receive update from content uri, update toggle state directly.
4.Rename Controller to more suitable name.

Bug: 346949547
Test: atest SettingsRoboTests
Flag: com.android.settings.keyboard.keyboard_and_touchpad_a11y_new_page_enabled
Change-Id: I94d8d1a77528b13f59b2d67dfa30e17dd177e385

src/com/android/settings/inputmethod/KeyboardAccessibilityMouseKeysController.java

@@ -23,14 +23,25 @@ import android.provider.Settings;
 
 import androidx.annotation.NonNull;
 import androidx.lifecycle.LifecycleObserver;
+import androidx.preference.PreferenceScreen;
+import androidx.preference.TwoStatePreference;
 
 public class KeyboardAccessibilityMouseKeysController extends
-        KeyboardAccessibilityController implements
+        InputSettingPreferenceController implements
         LifecycleObserver {
+
+    private TwoStatePreference mTwoStatePreference;
+
     public KeyboardAccessibilityMouseKeysController(@NonNull Context context, @NonNull String key) {
         super(context, key);
     }
 
+    @Override
+    public void displayPreference(@NonNull PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mTwoStatePreference = screen.findPreference(getPreferenceKey());
+    }
+
     @Override
     public boolean isChecked() {
         return InputSettings.isAccessibilityMouseKeysEnabled(mContext);
@@ -51,9 +62,11 @@ public class KeyboardAccessibilityMouseKeysController extends
     }
 
     @Override
-    protected void updateKeyboardAccessibilitySettings() {
-        setChecked(
-                InputSettings.isAccessibilityMouseKeysEnabled(mContext));
+    protected void onInputSettingUpdated() {
+        if (mTwoStatePreference != null) {
+            mTwoStatePreference.setChecked(
+                    InputSettings.isAccessibilityMouseKeysEnabled(mContext));
+        }
     }
 
     @Override