Tea is full of fermentables so you probably made more of a tea wine than a hard tea. To do a hard tea you would need to add the tea bags like you were backsweetening.
(Cold crashing, adding k-meta/sorbate, or fermenting to yeasts alcohol tolerance etc. before you add the tea bags.)
Unless your going for a tea wine taste with skeeter in the mix. Some people like tea wine. I've never had it but it sounds nasty to me. I like my tea dark, sweet and icy.