Fix bubble bar visibility issue

Update the bubble bar visibility for the initial bubble if the animation
is suppressed, e.g. if we're creating the bubble when the shade is open.

Flag: com.android.wm.shell.enable_bubble_bar
Bug: 382693837
Test: manual
       - enable bubbles
       - remove all conversations from the list of allowed to bubble
       - create notification
       - open shade and click on the bubble button to bubble the notification
       - observe bubble bar becomes visible

Change-Id: If771c28998b2b091f4f1ab38001e9485ed1ed849