fix: Add clean_formatter_state fixture to session display config tests

Author: kosiew

python/tests/test_dataframe.py

@@ -131,11 +131,11 @@ def test_session_with_display_config(data):
     assert html_repr != html_repr2
 
     # Check that the second representation has the short cell data based on the configured length
-    assert f'<span class="expandable" id="' in html_repr2
+    assert f"<span class='expandable' id=" in html_repr2
     assert f'>{("x" * 10)}</span>' in html_repr2
 
 
-def test_display_config_in_init(data):
+def test_display_config_in_init(data, clean_formatter_state):
     # Test providing display config directly in SessionContext constructor
     display_config = DataframeDisplayConfig(
         max_table_bytes=1024,
@@ -1789,7 +1789,7 @@ def test_display_config_affects_repr(data):
     assert "Data truncated" not in repr_str2
 
 
-def test_display_config_affects_html_repr(data):
+def test_display_config_affects_html_repr(data, clean_formatter_state):
     # Create a context with custom display config to show only a small cell length
     ctx = SessionContext().with_display_config(max_cell_length=5)
 
@@ -1801,7 +1801,7 @@ def test_display_config_affects_html_repr(data):
 
     # The cell should be truncated to 5 characters and have expansion button
     assert ">xxxxx" in html_str  # 5 character limit
-    expandable_class = 'class="expandable-container"'
+    expandable_class = '.expandable-container'
     assert expandable_class in html_str
 
     # Create a context with larger cell length limit