Pathfinding at the intersection of land-water environments does not work correctly

[AlexSnowLeo]

When there are obstacles with angular movement and the squares are of mixed land-water type. Contiguous obstacles must prohibit diagonal movement.

For example on the tutorial map.

2023-04-23.18.29.07.mp4

[ProgerXP]

Confirmed, related to:

Core/client/H3.PathCost.js

Lines 183 to 194 in 55cafe3

	// XXX+I,C Some diagonal movements (where any adjacent tile is a ground?) are prohibited on water. For example, one cannot interact with Mermaids after boarding [S] here (Mermaids shifted by one to the left are reachable):
	//
	// [_][_][ ][ ] _ = ground
	// [ ][ ][ ][ ] [ ] = water
	// [ ][#][@][#] [#@#] = Mermaids
	// [ ][S][H][_] S = ship, H = hero on ground
	// [ ][ ][_][_]
	//
	// A simpler example where ² is only reachable via ¹:
	//
	// [ ²[_] _ = ground
	// [ ¹[S]