Rebase and fix crash from sidebar

* API changed
* Even playlist button doesn't exist on sidebar, crash shouldn't
  happen

browser/ui/views/playlist/playlist_action_bubble_view.cc

@@ -154,9 +154,6 @@ ConfirmBubble::ConfirmBubble(Browser* browser,
 }
 
 void ConfirmBubble::OpenInPlaylist() {
-  auto* side_panel_coordinator =
-      PlaylistSidePanelCoordinator::FromBrowser(browser_);
-
   // Technically, the saved items could belong to multiple playlists
   // at the same time and their parent playlists could be different from each
   // other's. But for simplicity, we just open the first one assuming that most
@@ -167,6 +164,8 @@ void ConfirmBubble::OpenInPlaylist() {
   const std::string& playlist_id = saved_items.front()->parents.front();
   const std::string& item_id = saved_items.front()->id;
 
+  auto* side_panel_coordinator =
+      PlaylistSidePanelCoordinator::FromBrowser(browser_);
   CHECK(side_panel_coordinator);
   side_panel_coordinator->ActivatePanel();
   side_panel_coordinator->LoadPlaylist(playlist_id, item_id);

browser/ui/views/side_panel/playlist/playlist_side_panel_coordinator.cc

@@ -45,14 +45,8 @@ void PlaylistSidePanelCoordinator::CreateAndRegisterEntry(
 void PlaylistSidePanelCoordinator::ActivatePanel() {
   auto* sidebar_controller =
       static_cast<BraveBrowser*>(browser_.get())->sidebar_controller();
-  auto* sidebar_model = sidebar_controller->model();
-  const auto& sidebar_items = sidebar_model->GetAllSidebarItems();
-  auto iter = base::ranges::find_if(sidebar_items, [](const auto& item) {
-    return item.built_in_item_type ==
-           sidebar::SidebarItem::BuiltInItemType::kPlaylist;
-  });
-  sidebar_controller->ActivateItemAt(
-      std::distance(sidebar_items.begin(), iter));
+  sidebar_controller->ActivatePanelItem(
+      sidebar::SidebarItem::BuiltInItemType::kPlaylist);
 }
 
 void PlaylistSidePanelCoordinator::LoadPlaylist(const std::string& playlist_id,

browser/ui/views/sidebar/sidebar_container_view.cc

@@ -662,9 +662,11 @@ void SidebarContainerView::OnEntryShown(SidePanelEntry* entry) {
       auto side_bar_index = sidebar_model_->GetIndexOf(item);
       auto* controller = browser_->sidebar_controller();
       controller->ActivateItemAt(side_bar_index);
-      break;
+      return;
     }
   }
+
+  ShowSidebarAll();
 }
 
 void SidebarContainerView::OnEntryHidden(SidePanelEntry* entry) {