[gnome-music] (9 commits) Non-fast-forward update to branch wip/jfelder/search-selection-reset

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/search-selection-reset' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  1d9e07e... search: Add search-mode-enabled GObject property
  57b087a... search: Add state GObject Property
  688ba27... window: Do not expose headerbar's search button
  0c4a401... window: Fix a flake8 warning
  d41a48e... CI: Remove window.py from flake8 exceptions
  1ae822e... albumsview: Correctly restore the headerbar after a search
  8f9f798... baseview: Remove _on_selection_mode_request method
  51634d2... searchview: Reset number of selected items on search

Commits added to the branch:

  7a06993... search: Add search-mode-active GObject property
  5ff675b... headerbar: Rename search_mode_enabled property
  2bbc4ea... search: Add state GObject Property
  e724567... window: Do not expose headerbar's search button
  ac09e67... window: Fix a flake8 warning
  e039730... CI: Remove window.py from flake8 exceptions
  37369b2... albumsview: Correctly restore the headerbar after a search
  41c1300... baseview: Remove _on_selection_mode_request method
  fb83103... searchview: Reset number of selected items on search