bt: Set alias for all devices in a set

This reduces name flickering when one of the devices from the set
disconnects.

Bug: 269067986
Test: manual
Tag: #feature

Change-Id: Ic33c5bc1028d65fff3d46534a9ba951c608a1dd9

packages/SettingsLib/src/com/android/settingslib/bluetooth/CachedBluetoothDevice.java

@@ -576,9 +576,14 @@ public class CachedBluetoothDevice implements Comparable<CachedBluetoothDevice>
      */
     public void setName(String name) {
         // Prevent getName() to be set to null if setName(null) is called
-        if (name != null && !TextUtils.equals(name, getName())) {
-            mDevice.setAlias(name);
-            dispatchAttributesChanged();
+        if (name == null || TextUtils.equals(name, getName())) {
+            return;
+        }
+        mDevice.setAlias(name);
+        dispatchAttributesChanged();
+
+        for (CachedBluetoothDevice cbd : mMemberDevices) {
+            cbd.setName(name);
         }
     }