Adding any Myco product to a tea would be a waste. Myco products need to be applied tot he roots and brewing them in a tea will not cause the Myco to grow. The spores need to come into direct contact with the roots to grow, that’s why they are usually applied during initial planting to the whole the sprouted plant is going into or put directly on the roots. It is used the same way for transplanting. You could also just mix som into the soil mix you plan on using and hope the roots grow into the areas where the spores end up.
But putting any Myco in a tea is a waste and even if it is added after the brewing just before applying it wouldn’t be a very good use of the product. If you are adding nutrients in adequate amounts for the plant then the plant won’t send the “signals” to feed and activate the mycos and if the tea has a large amount of bacteria the bacteria will most likely consume any mycos as they start to grow before they would be able to grow enough to be of use to the plant.