[gnome-music] (8 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:

  f0320a1... search: Add search-mode-enabled GObject property
  97c52e3... search: Add state GObject Property
  318c889... window: Do not expose headerbar's search button
  396fc4f... window: Fix a flake8 warning
  9e7ebb8... CI: Remove window.py from flake8 exceptions
  efb4231... albumsview: Correctly restore the headerbar after a search
  b876541... baseview: Remove _on_selection_mode_request method
  2f0d309... searchview: Reset number of selected items on search

Commits added to the branch:

  1b7d159... search: Add search-mode-enabled GObject property
  54373a6... search: Add state GObject Property
  1925e22... window: Do not expose headerbar's search button
  35e939e... window: Fix a flake8 warning
  ba2fd34... CI: Remove window.py from flake8 exceptions
  16fd43a... albumsview: Correctly restore the headerbar after a search
  633785c... baseview: Remove _on_selection_mode_request method
  54fc3e9... searchview: Reset number of selected items on search