Junction restriction issues: u-turns; & ped crossing overlay

[originalfoo]

These were found while testing #359 but not caused by that PR. Some of them might have been fixed by #358 (I'll test again later and update this issue with results).

First, my mod options for the Policies tab:

Grabbing screenshots brb...

[originalfoo]

Issue 1 - U-turns at transition nodes

Having enabled "Vehicles may u-turn at junctions" option in mod settings, transition nodes with visible ped crossings started getting u-turns:

[originalfoo]

Issue 2 - U-turns at bent nodes

Having enabled "Vehicles may u-turn at junctions" option in mod settings, some bend nodes were getting u-turns:

But not this one:

[originalfoo]

Issue 3 - Ped crossing overlay

This seems to mostly apply to transition and bend nodes, probably applies to some others too.

Select a node:

This is what it looks like selected, without changing anything:

Then deselect (right-click) - for some reason the ped crossing overlay now appears even though I've not changed anything:

[originalfoo]

Regarding U-turns on bends (issue 2 above), discrepancy is possibly something to do with these settings on the network (via https://cslmodding.info/asset/network/#properties):

• Enable Bending Segments = Automatically bends segments when building intersections at sharp angles.
• Enable Bending Nodes = Use a bent segment instead of a node on sharp corners.