fix circular PipelineGraph import (#37134)

* move import

* fix pylint

Author: derrickaw

sdks/python/apache_beam/runners/interactive/recording_manager.py

@@ -41,7 +41,6 @@
 from apache_beam.runners.interactive import pipeline_fragment as pf
 from apache_beam.runners.interactive import utils
 from apache_beam.runners.interactive.caching.cacheable import CacheKey
-from apache_beam.runners.interactive.display.pipeline_graph import PipelineGraph
 from apache_beam.runners.interactive.options import capture_control
 from apache_beam.runners.runner import PipelineState
 
@@ -713,6 +712,10 @@ def _get_pipeline_graph(self):
     """Lazily initializes and returns the PipelineGraph."""
     if self._pipeline_graph is None:
       try:
+        # Allow initial module loading to be complete and not have a circular
+        # import.
+        from apache_beam.runners.interactive.display.pipeline_graph import PipelineGraph
+
         # Try to create the graph.
         self._pipeline_graph = PipelineGraph(self.user_pipeline)
       except (ImportError, NameError, AttributeError):