nodes inside a component's shadowDOM have incorrect model when using shadowDOM shim

[sorvell]

The nodes in a component's shadowDOM should be set to have the local model of the component. This causes a problem when using shim shadowDOM since in this case model is inherited via the composed dom and not the local dom, as desired.

[sorvell]

Test case in toolkitchen/issues/pending/shimShadowModel/

[frankiefu]

ShadowDOM shim is gone, closing.