test(pyspark): avoid disconnecting with pyspark as it breaks subsequent tests (#10995)

Author: cpcloud

ibis/backends/tests/test_client.py

@@ -362,7 +362,8 @@ def test_create_temporary_table_from_schema(con_no_data, new_schema):
             == column_type
         )
 
-    con_no_data.disconnect()
+    if con_no_data.name != "pyspark":
+        con_no_data.disconnect()
     con_no_data.reconnect()
     # verify table no longer exist after reconnect
     assert temp_table not in con_no_data.list_tables()
@@ -822,7 +823,8 @@ def test_connect_url(url):
     try:
         assert con.execute(ibis.literal(1)) == 1
     finally:
-        con.disconnect()
+        if con.name != "pyspark":
+            con.disconnect()
 
 
 @pytest.mark.parametrize(
@@ -1256,7 +1258,7 @@ def test_set_backend(con, monkeypatch):
     "name",
     [
         param(name, marks=getattr(mark, name), id=name)
-        for name in ("datafusion", "duckdb", "polars", "sqlite")
+        for name in ("datafusion", "duckdb", "polars", "sqlite", "pyspark")
     ],
 )
 def test_set_backend_name(name, monkeypatch):
@@ -1268,7 +1270,8 @@ def test_set_backend_name(name, monkeypatch):
         con = ibis.get_backend()
         assert con.name == name
     finally:
-        con.disconnect()
+        if con.name != "pyspark":
+            con.disconnect()
 
 
 @pytest.mark.parametrize(