Reload table after replace in integration test (StagedTable blocks scan)

Catalog.replace_table() returns the StagedTable object even after
commit, and StagedTable.scan() raises ValueError unconditionally.
The catalog-behavior unit tests already follow the
load_table-after-replace pattern; align the integration test.

Author: smaheshwar-pltr

tests/integration/test_catalog.py

@@ -902,7 +902,8 @@ def test_replace_table(test_catalog: Catalog, database_name: str, table_name: st
         NestedField(field_id=2, name="name", field_type=StringType(), required=False),
         NestedField(field_id=3, name="active", field_type=BooleanType(), required=False),
     )
-    replaced = test_catalog.replace_table(identifier, schema=new_schema)
+    test_catalog.replace_table(identifier, schema=new_schema)
+    replaced = test_catalog.load_table(identifier)
 
     assert replaced.metadata.table_uuid == original.metadata.table_uuid
     assert replaced.current_snapshot() is None