UI: Also toggle mixer toolbar in view menu

This change makes the mixer toolbar also show/hide when toggling
the source toolbars in the view menu.

UI/data/locale/en-US.ini

@@ -790,7 +790,7 @@ Basic.MainMenu.Edit.AdvAudio="&Advanced Audio Properties"
 # basic mode view menu
 Basic.MainMenu.View="&View"
 Basic.MainMenu.View.Toolbars="&Toolbars"
-Basic.MainMenu.View.ListboxToolbars="Scene/Source List Buttons"
+Basic.MainMenu.View.ListboxToolbars="Dock Toolbars"
 Basic.MainMenu.View.ContextBar="Source Toolbar"
 Basic.MainMenu.View.SourceIcons="Source &Icons"
 Basic.MainMenu.View.StatusBar="&Status Bar"

UI/window-basic-main.cpp

@@ -9431,6 +9431,7 @@ void OBSBasic::on_toggleListboxToolbars_toggled(bool visible)
 {
 	ui->sourcesToolbar->setVisible(visible);
 	ui->scenesToolbar->setVisible(visible);
+	ui->mixerToolbar->setVisible(visible);
 
 	config_set_bool(App()->GlobalConfig(), "BasicWindow",
 			"ShowListboxToolbars", visible);