This closes qax-os#2072, support adjust data validations cross multiple worksheets (qax-os#2073)

Author: gypsy1234

adjust.go

@@ -969,7 +969,7 @@ func (f *File) adjustDataValidations(ws *xlsxWorksheet, sheet string, dir adjust
 			return err
 		}
 		if worksheet.DataValidations == nil {
-			return nil
+			continue
 		}
 		for i := 0; i < len(worksheet.DataValidations.DataValidation); i++ {
 			dv := worksheet.DataValidations.DataValidation[i]

adjust_test.go

@@ -1170,6 +1170,25 @@ func TestAdjustDataValidations(t *testing.T) {
 		assert.NoError(t, err)
 		assert.Equal(t, formula, dvs[0].Formula1)
 	})
+
+	t.Run("no_data_validations_on_first_sheet", func(t *testing.T) {
+		f := NewFile()
+
+		// Add Sheet2 and set a data validation
+		_, err = f.NewSheet("Sheet2")
+		assert.NoError(t, err)
+		dv := NewDataValidation(true)
+		dv.Sqref = "C5:D6"
+		assert.NoError(t, f.AddDataValidation("Sheet2", dv))
+
+		// Adjust Sheet2 by removing a column
+		assert.NoError(t, f.RemoveCol("Sheet2", "A"))
+
+		// Verify that data validations on Sheet2 are adjusted correctly
+		dvs, err = f.GetDataValidations("Sheet2")
+		assert.NoError(t, err)
+		assert.Equal(t, "B5:C6", dvs[0].Sqref) // Adjusted range
+	})
 }
 
 func TestAdjustDrawings(t *testing.T) {