Didn’t they accidentally use a tube with an 8.3mm valve stem instead of 10mm? (They come in two sizes).
The front TR4 all metal valve stem comes with nut.
The only fix that would not allow this to happen is a "rim-lock" but those are commonly used on dirt bikes. I've never heard of their use on street bikes but I would assume the only issue one would have after installing them on a street bike would be a tire balancing issue ay high speed. I would recommend a true spin balance after installing one.
That's what I added to mine when it spun inside the rim.Years ago there used to be inner tubes with threaded valve stems so that two keeper nuts could be tightened against the rim and jammed to keep the stem from retreating back into the rim when there wasn't enough air pressure in the tube.