Cactus flower cannot be placed in a flower pot

Relates to: MC-170833 MC-182822 MC-214684 MC-226648 MC-226650 MC-226838 MC-226839 MC-226840 MC-226841 MC-226842 MC-226843 MC-260050 MC-279215 MC-279929

The bug

Cactus flowers cannot be placed in flower pots. This is inconsistent with other one block tall flowers, especially since they can be placed on dirt-like blocks.

How to reproduce

1. Obtain a cactus flower
2. Place it in a flower pot

Expected results

That would be possible.

Actual results

It is not, and that is inconsistent.