Bug 1797156 - Add a tag to make it easier to run OverflowableToolbar tests on their own. r=sclements,cmkm

Differential Revision: https://phabricator.services.mozilla.com/D160105

browser/components/customizableui/test/browser.ini

@@ -14,6 +14,7 @@ skip-if =
 [browser_877447_skip_missing_ids.js]
 [browser_878452_drag_to_panel.js]
 [browser_884402_customize_from_overflow.js]
+tags = overflowable-toolbar
 [browser_885052_customize_mode_observers_disabed.js]
 tags = fullscreen
 
@@ -23,11 +24,14 @@ tags = fullscreen
 [browser_892955_isWidgetRemovable_for_removed_widgets.js]
 [browser_892956_destroyWidget_defaultPlacements.js]
 [browser_909779_overflow_toolbars_new_window.js]
+tags = overflowable-toolbar
 skip-if = os == "linux"
 
 [browser_901207_searchbar_in_panel.js]
 [browser_913972_currentset_overflow.js]
+tags = overflowable-toolbar
 [browser_914138_widget_API_overflowable_toolbar.js]
+tags = overflowable-toolbar
 skip-if = os == "linux"
 
 [browser_918049_skipintoolbarset_dnd.js]
@@ -70,6 +74,7 @@ skip-if = (os == "linux" && debug) # Intermittent failures
 skip-if = verify
 [browser_956602_remove_special_widget.js]
 [browser_962069_drag_to_overflow_chevron.js]
+tags = overflowable-toolbar
 [browser_963639_customizing_attribute_non_customizable_toolbar.js]
 [browser_968565_insert_before_hidden_items.js]
 [browser_969427_recreate_destroyed_widget_after_reset.js]
@@ -119,6 +124,7 @@ skip-if = verify
 [browser_1701883_restore_defaults_pocket_pref.js]
 [browser_1702200_PanelMultiView_header_separator.js]
 [browser_1795260_searchbar_overflow_toolbar.js]
+tags = overflowable-toolbar
 [browser_allow_dragging_removable_false.js]
 [browser_bookmarks_toolbar_collapsed_restore_default.js]
 [browser_bookmarks_toolbar_shown_newtab.js]
@@ -143,6 +149,7 @@ https_first_disabled = true
 [browser_menubar_visibility.js]
 skip-if = os == "mac" # no toggle-able menubar on macOS.
 [browser_overflow_use_subviews.js]
+tags = overflowable-toolbar
 skip-if = verify
 [browser_palette_labels.js]
 [browser_panel_keyboard_navigation.js]