Fix manage click listener for promoted bubble

The manage button is created by the expanded view, but the listener
is set by stack view. Sometimes there are cases where the button
is recreated by the expanded view, which removes the existing listener.

This change now sets the click listener within the expanded view
whenever the manage button is set.

Flag: NONE
Fixes: 352481011
Test: manual
       - Have 5 bubbles in the stack
       - Create 1 more bubble so that one gets overflowed
       - Go to the overflow menu and click on the bubble to promote it
       - Click on the manage button
       - Observe the manage menu is displayed
Change-Id: Ia0d55ceb070c9bfcfa2cf9521696b35708280755