Magma cubes and slimes jump when changing goals

It seems that slimes and magma cubes have their jump intervals saved to their pathing goals. Basically, when either mob finds a target (or even loses a target), their jump intervals no longer have a delay since they have a new goal, so they jump again.

You can reproduce this by doing the following:

1. Spawn a magma cube (or slime; magma cubes are easier though)

2. Change to survival mode

3. Change to creative mode

4. Return to step 2 and progress to step 3 as many times as desired

Here, the magma cube (or slime) will jump around excitedly. This is also the reason why newly spawned slimes and magma cubes jump twice; the children spawn without a target, so they jump, then they target a survival player, so they jump again.

A fix would probably make slimes and magma cubes jump when the timer ends, not when it begins. This would mean that when slimes and magma cubes target mobs, they do not jump, even if it's technically been long enough.

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Still an issue in 1.17.11/1.17.40.20.

This is still an issue in 1.19.30