HoverCallbacks not working in IsometricTileMap

[tejHackerDev]

IsometricTileMap returns its size as [0,0]. Due to which HoverCallbacks not working

Current bug behavior

Hovers not working

Expected behavior

Hovers should work as other PositionComponents

Steps to reproduce

Create a tilemap with IsometricTileMap component & add desired hovercallback & do print statements

[Lukas Klingsbo]

Should be solved by #3142