Remove recycling HeadsUpManagerPhone objects

With this flag enabled HeadsUpEntry#mEntry could be non null.

Bug: 328390331
Test: atest AvalancheControllerTest BaseHeadsUpManagerTest HeadsUpManagerPhoneTest
Flag: ACONFIG com.android.systemui.notifications_heads_up_refactor DEVELOPMENT

Change-Id: I3a1cd242e22e46ce9f47406bdf78cf9192971faf
7 files changed