[467663] Recompute newSource/TargetTerminal only for TreeRouter

- Use EdgeQuery.isEdgeOnTreeOnSourceSide()/isEdgeOnTreeOnTargetSide()
methods to recompute newSource/TargetTerminal only for edge having Tree
Style Routing.

Bug: 467663
Change-Id: I4a106b6ab7e3c29c9e4114d123f9ba305aaef0da
Signed-off-by: Esteban Dugueperoux <esteban.dugueperoux@obeo.fr>
1 file changed