[Bluetooth] Avoid crash from emtpy devcie name.

Bug: 288233931
Test: atest passed
Change-Id: I85be66e6b985edcf1b02c55cc33236f9347846cf

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

@@ -583,7 +583,7 @@ 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())) {
+        if (TextUtils.isEmpty(name) || TextUtils.equals(name, getName())) {
             return;
         }
         mDevice.setAlias(name);

packages/SettingsLib/tests/robotests/src/com/android/settingslib/bluetooth/CachedBluetoothDeviceTest.java

@@ -1014,6 +1014,13 @@ public class CachedBluetoothDeviceTest {
         verify(mDevice, never()).setAlias(any());
     }
 
+    @Test
+    public void setName_setDeviceNameIsEmpty() {
+        mCachedDevice.setName("");
+
+        verify(mDevice, never()).setAlias(any());
+    }
+
     @Test
     public void getProfileConnectionState_nullProfile_returnDisconnected() {
         assertThat(mCachedDevice.getProfileConnectionState(null)).isEqualTo(