Fix manage menu after theme change

If the manage menu was visible before changing the theme, make sure
it gets re-shown after the theme change. Previously what happened
was, after a theme change, we end up in an inconsistent state where
the manage menu is removed, but the internal state field indicates
the menu is visible, which leads to issues.

This also fixes another issue where the manage menu gets positioned
incorrectly if the device is folded after a theme change.

Flag: EXEMPT bug fix
Fixes: 354641768
Fixes: 354634320
Test: manual
      - create some bubbles
      - expand a bubble
      - tap on the manage button
      - change the theme to light or dark
      - observe manage menu is displayed correctly
Change-Id: I78026025a1d958c971a8e744445d628e9ac1e8a3