If it can not hold its shape outside the container it is a liquid, so yes they would be considered liquid. Personally I don't like to invite any extra attention so I would pass and pack something non liquid instead especially now that many airports are inspecting food.
Or if you really, really, must have fruit cups - get a large can. Drain and the juice. Pour the fruit into a sealable container. Pour the liquid into one or moor 100 ml containers. Put the latter in your 3-1-1 bag. Bring small cue. Combine and distribute during flight.
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