Fix flaky assert_node_output_is with retry instead of sleep

Add @retry_assertion_during_transitions + dismiss stale tooltip
before hover so retries get fresh text. Remove UX_RENDER sleep
hacks from workflow_editor_connect.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/galaxy/selenium/navigates_galaxy.py

@@ -1445,10 +1445,6 @@ class NavigatesGalaxy(HasDriverProxy[WaitType]):
                 self.sleep_for(self.wait_types.UX_RENDER)
                 self.screenshot(screenshot_partial)
         self.drag_and_drop(source_element, sink_element)
-        if self._driver_impl.backend_type == "playwright":
-            # dispatch_event is synchronous but Vue reactivity (store updates,
-            # terminal type recalculation) runs in microtasks — wait for it.
-            self.sleep_for(self.wait_types.UX_RENDER)
 
     def workflow_editor_source_sink_terminal_ids(self, source, sink):
         editor = self.components.workflow_editor

lib/galaxy_test/selenium/test_workflow_editor.py

@@ -1515,11 +1515,14 @@ steps:
 
         return (int(width_stripped), int(height_stripped))
 
+    @retry_assertion_during_transitions
     def assert_node_output_is(self, label: str, output_type: str, subcollection_type: Optional[str] = None):
         editor = self.components.workflow_editor
         node_label, output_name = label.split("#")
         node = editor.node._(label=node_label)
         node.wait_for_present()
+        # Dismiss any stale tooltip before hovering so retry gets fresh text
+        self.click_center()
         output_element = node.output_terminal(name=output_name).wait_for_visible()
         self.hover_over(output_element)
         element = self.components._.tooltip_inner.wait_for_present()