This is a check-and-balance question more than a partisan one — the unanimous votes show it. A pocket veto lets an executive kill a bill by simply sitting on it, with no public reason given; ending it forces the decision into the open and makes the governor own a veto in writing. For a citizen who values government that answers for what it does, that transparency cuts in a healthy direction. The practical stakes are modest — it changes process, not policy — but keeping the lines of accountability clean is itself a public good.
"For there is nothing hid, which shall not be manifested; neither was any thing kept secret, but that it should come abroad."
— Mark 4:22 (KJV)