[Bug] collision true. Can't move element to some coordinates

[fabiot21]

When collision is active, when trying to move an element it can only be moved to certain spaces not everywhere.

Reproduction: Can't drag on this repl element "0" down (y axis). Only works if collision is false.

[hearthole]

It is intended. without the y-axis compression, it's hard to decide where collision target will be moved. plz refer to following change log. https://github.com/cuire/svelte-grid-extended/pull/27#issue-1785173048

[cuire]

Check #32