adjustDataValidations skips adjusting data validations on subsequent sheets if the first sheet has no data validations

[gypsy1234]

Description

The adjustDataValidations function, which is invoked by operations such as RemoveCol, skips properly adjusting data validations on subsequent sheets if the first sheet in a workbook has no data validations.

Steps to reproduce the issue

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) // test failed
})

Describe the results you received

DataValidation not updated

Describe the results you expected

DataValidation adjusted

Go version

go version go1.22.2 darwin/arm64

Excelize version or commit ID

2.9.0

Environment

Mac

Validations

• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.