fix(table): unset data rows without causing nil pointer err

[bashbunni]

Without this change data is set to nil causing nil ptr errors whenever we want to add data to the table after calling ClearRows. Instead, this function should reset the values without clearing the data type so it's still usable

[meowgorithm]

Okay cool. So basically if you call ClearRows() and then try and add more data we get a nil pointer exception, right?

table := New().
		Border(lipgloss.NormalBorder()).
		Headers("LANGUAGE", "FORMAL", "INFORMAL").
		Row("Chinese", "Nǐn hǎo", "Nǐ hǎo")
	table.ClearRows() // Right here
	table.Row("French", "Bonjour", "Salut")

[bashbunni]

@meowgorithm yes, exactly! Or when you would call String() it would try and check the length of rows and get a nil pointer error because the value is nil instead of an array or slice

[meowgorithm]

This is a great catch 🙏