UI Improvement: Do not add archived app icon to workspace when unarchival...

UI Improvement: Do not add archived app icon to workspace when unarchival starts in case the icon already doesn't exist.

Test: verified bugfix locally.
Bug: 319213296
Flag: ACONFIG com.android.launcher3.enable_support_for_archiving DEVELOPMENT
Change-Id: Iad3cc1a254b1543511976469c444eeaf869c7d50