Adds 'Save As' option to workflow editor toolbar

Includes a new selector for the 'Save As' option in the navigation configuration.
Updates the Selenium test to handle the 'Save As' option visibility and interaction.

Improves user experience by ensuring the 'Save As' option is accessible and testable.

client/src/utils/navigation/navigation.yml

@@ -734,6 +734,7 @@ workflow_editor:
       duplicate_selection: "[title='duplicate selected']"
       delete_selection: "[title='delete selected']"
       auto_layout: "#auto-layout-button"
+      option_save_as: ".activity-settings-item[contains(text(), 'Save as')]"
   comment:
     selectors:
       _: ".workflow-editor-comment"

lib/galaxy_test/selenium/test_workflow_editor.py

@@ -473,7 +473,11 @@ def test_save_as(self):
         self.workflow_index_open_with_name(name)
         self.sleep_for(self.wait_types.UX_RENDER)
         self.screenshot("workflow_editor_edit_menu")
-        self.workflow_editor_click_option("Save As")
+
+        if self.element_absent(self.components.workflow_editor.tool_bar.option_save_as):
+            self.components.preferences.activity.wait_for_and_click()
+
+        self.components.workflow_editor.tool_bar.option_save_as.wait_for_and_click()
 
     @selenium_test
     def test_editor_tool_upgrade(self):