Extend jump height for farmland decay

The standard jump height is 1,25 blocks and leads to destroy farmland while jumping (or what happens mostly: while accidently auto-jumping) at this normal height. It would be less annoying to extend the needed jump height a little bit, that this isn't happen anymore so often. It's always frustrating if the player auto-jumps and the farmland is destroyed and no hoe is nearby for correcting this mistake.

The extention should not be to high so that the jump boost will still have an effect on farmland.