Fix test_vasopressor_units AttributeError (Series has no .contains)

[Chessing234]

Bug

test_vasopressor_units in mimic-iv/tests/test_medication.py raises AttributeError: 'Series' object has no attribute 'contains' whenever the inner query returns any rows:

https://github.com/MIT-LCP/mimic-code/blob/5706978/mimic-iv/tests/test_medication.py#L60-L61

df = gbq.read_gbq(query, project_id=project_id, dialect="standard")
# if we find new uninspected rows, raise a warning. this will only happen when mimic-iv is updated.
if (~df['hadm_id'].contains(hadm_id_list)).any():

Root cause

pandas.Series has no .contains() method. The string accessor Series.str.contains exists for substring matching on strings, but the intent here is clearly "is each hadm_id in the known list of manually-inspected hadm_ids", which is Series.isin(hadm_id_list).

Fix

Replace .contains(hadm_id_list) with .isin(hadm_id_list). The ~…any() negation and the surrounding logic then work as intended: the warning fires when a row has an hadm_id not already on the allow-list, which is the documented behaviour of the surrounding comment ("if we find new uninspected rows, raise a warning").