States have a similar setup patterned off the federal government, with most things falling only in the purview of the states. In this case they're correctly making sure that vaccines delivered as food are correctly treated as such under the framework here https://unicourt.github.io/cic-code-tn/transforms/tn/octn/r7...
Considering the active development this is very forward thinking and timely
Again, under Federal law and regulation, these theoretical products are likely to already be deemed drugs (and this determination would almost certainly preempt any state decision in the opposite direction). The legislation is, at best, redundant.