Add NavigationPolygon cell_size
property
#78172
Merged
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Adds NavigationPolygon
cell_size
property, same as NavigationMesh already has.Theoretically this was always needed but 2D navigation did just assume a default 1.0 cell_size behind the scene. It never updated the cell_size correctly on the internal NavigationMesh from the default 0.25. There was no way for 2D users to change it other can getting the NavigationMesh manually and changing the cell_size.
Needed now because 2D runs into the cell_size validation for the navigation map on the NavigationServer added with #77714.
In case someone wonders why not just remove the check when it requires so much extra ... all the other prs that also require a cell_size property on the NavigationPolygon are not in yet and strictly speaking not able to change the cell_size was always a bug.