Fix SparkSession.getActiveSession() returning None in connectivity metrics

[eKathleenCarter]

update connectivity_metrics.py to use ps.SparkSession.builder.getOrCreate()

Description of the changes

Fixes / Resolves the following issues:

Checklist:

• Added label to PR (e.g. enhancement or bug)
• Ensured the PR is named descriptively. FYI: This name is used as part of our changelog & release notes.
• Looked at the diff on github to make sure no unwanted files have been committed.
• Made corresponding changes to the documentation
• Added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules
• If breaking changes occur or you need everyone to run a command locally after
  pulling in latest main, uncomment the below "Merge Notification" section and
  describe steps necessary for people
• Ran on sample data using kedro run -e sample -p test_sample (see sample environment guide)

[eKathleenCarter]

updated to graphframes-py>=0.10.0

still producing the same results.

[12/15/25 16:23:48] INFO     Found 1,840,933          connectivity_metrics.py:95
                             connected components                               
                             using GraphFrames.                                 
                             Largest component has                              
                             7,367,582 nodes.                                   
                    INFO     Saving data to                  data_catalog.py:445
                             integration.prm.connected_compo                    
                             nents_node_assignments                             
                             (LazySparkDataset)...                              
[12/15/25 16:23:59] INFO     Saving data to                  data_catalog.py:445
                             integration.prm.connected_compo                    
                             nents_stats                                        
                             (LazySparkDataset)...                              
[12/15/25 16:24:09] INFO     Completed node:                       runner.py:250
                             compute_connected_components                       
                    INFO     Completed 1 out of 1 tasks            runner.py:251
                    INFO     Pipeline execution completed          runner.py:135
                             successfully in 369.4 sec.                         

[JacquesVergine]

Thanks Kathleen, great work!

[eKathleenCarter]

@JacquesVergine, something in CI seems to be hanging. Not sure what is happening here. The checks have not completed.