[Bug] Party clown car token depends on grid scale distances when it should not, which breaks its functionality in those maps

[shemetz]

(pf2e v6.9.0, no modules)

To reproduce this bug, set the scene scale value to a number of ft higher than ~15.

Example - gridless map, 100ft scale

Example - square grid map, 20ft scale

When the grid scale value is high enough, clicking the "Deposit PC tokens" button will deposit them all in the same grid space as the party token.

Interestingly, the scale value doesn't actually affect where they are -- it's not like they appear twice as far in 2 ft scale or twice as close at 10 ft scale. It's just that beyond a certain point the token placements all appear exactly within the same x-y coordinates of the party token.

Slighly related to #17910