Connections do not get automatically colored for new components

[paulapreuss]

One thing I just noticed that the connections currently (recently) not get colored as before, they stay blue.
Just after saving and reloading they get the color of the connected bus.

Originally posted by @mstich0 in #391

@mstich0 I had a little look at this but could not make out what might be wrong with it, there are no errors happening. The javascript code handling the node interface is a bit complex to find the problem right away. I will tacke this when I have some time to really look at it properly.

[josihoppe]

I just tested again with the current main (commit 849e1e9 and now for some reason the color connection works. Also I looked through the code a lot and it also looks there like it should be working. So I cannot recreate the color failure at the moment...