Fixed quick search bar shrinking.

Added an early return logic. So only icon translation provider is being
set to the hotseat icons.

Fixes: 375240372
Fixes: 377402904
Flag: com.android.wm.shell.enable_bubble_bar
Test: Manual. Added first bubble on unfolded Felix, quick search bar
remained the same size. Fold the device, hotseat icons do not overlap.

Change-Id: I292e565a79cfe121c2f8c617440d8b40c09bef82