Update test expectations for improved enum error messages

- Fixed test expectations to match enhanced error messages with column names
- Updated script tests to expect 'Data truncated for column 'e'' instead of empty string
- Fixed SET statement result expectations in insert ignore tests
- All enum-related tests now pass with improved error message format

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: elianddb

enginetest/queries/insert_queries.go

@@ -2870,7 +2870,7 @@ var InsertIgnoreScripts = []ScriptTest{
 			},
 			{
 				Query:    "set sql_mode = ''",
-				Expected: []sql.Row{{}},
+				Expected: []sql.Row{{types.OkResult{RowsAffected: 0, InsertID: 0}}},
 			},
 			{
 				Query:    "insert into enum_zero_test (enum_col) values (0)",

enginetest/queries/script_queries.go

@@ -1202,7 +1202,7 @@ CREATE TABLE tab3 (
 			{
 				// enum values must match EXACTLY for case-sensitive collations
 				Query:          "INSERT INTO enumtest1 VALUES (10, 'ABC'), (11, 'aBc'), (12, 'xyz');",
-				ExpectedErrStr: "Data truncated for column ''",
+				ExpectedErrStr: "Data truncated for column 'e'",
 			},
 			{
 				Query: "SHOW CREATE TABLE enumtest1;",
@@ -8053,11 +8053,11 @@ where
 		Assertions: []ScriptTestAssertion{
 			{
 				Query:          "insert into t values (1, 500)",
-				ExpectedErrStr: "Data truncated for column ''",
+				ExpectedErrStr: "Data truncated for column 'e'",
 			},
 			{
 				Query:          "insert into t values (1, -1)",
-				ExpectedErrStr: "Data truncated for column ''",
+				ExpectedErrStr: "Data truncated for column 'e'",
 			},
 		},
 	},